Most Active U.S. Stocks Today: HeartBeam, Nvidia, Tesla, Netflix and Nextdoor Lead Volatile Trade (Dec. 11, 2025)

The U.S. stock market is trading against a noisy backdrop of fresh Federal Reserve rate cuts, AI‑bubble worries, and a renewed meme‑stock craze. On Wednesday, December 10, 2025, trading volume concentrated in a mix of ultra‑speculative micro‑caps and mega‑cap tech leaders, and that momentum is spilling into Thursday’s session.

The Fed cut its benchmark rate by 25 basis points to a 3.50%–3.75% range on December 10, marking its third reduction of 2025 and signaling it still sees room to support a slowing economy even with inflation above target. ^[1] At the same time, Oracle’s latest earnings and a $15 billion AI‑spending splash sparked renewed fears of an AI bubble, with U.S. futures lower and AI bellwethers like Nvidia and Broadcom indicated down in pre‑market trading. ^[2]

Against that macro backdrop, volume data from StockAnalysis show the 20 most active U.S. stocks by share volume (all exchanges) as of Wednesday’s close were led by HeartBeam (BEAT), Agape ATP (ATPC), Paranovus (PAVS), Nvidia (NVDA) and Momentus (MNTS), with heavy trading also in iRobot (IRBT), Warner Bros. Discovery (WBD), Plug Power (PLUG), SoFi (SOFI), Tesla (TSLA) and Nextdoor (NXDR). ^[3]

This article breaks down the key stories, forecasts and analyst takes driving today’s most active U.S. stocks, using news and research dated December 10–11, 2025.

Today’s 20 Most Active U.S. Stocks by Volume

Data as of the close on Wednesday, December 10, 2025 (StockAnalysis, all U.S. exchanges). ^[4]

BEAT – HeartBeam, Inc. – $1.55, +92.43% — ~270.4M shares
ATPC – Agape ATP Corporation – $0.068, −94.83% — ~167.6M shares
PAVS – Paranovus Entertainment Technology Ltd. – $0.0381, −11.81% — ~166.0M shares
NVDA – NVIDIA Corporation – $183.78, −0.64% — ~162.5M shares
MNTS – Momentus Inc. – $0.89, +16.54% — ~141.8M shares
WOK – Work Medical Technology Group Ltd. – $0.19, −96.59% — ~130.9M shares
IRBT – iRobot Corporation – $5.24, +48.44% — ~129.6M shares
WBD – Warner Bros. Discovery, Inc. – $29.53, +4.49% — ~103.6M shares
BBAI – BigBear.ai Holdings, Inc. – $6.61, −1.49% — ~102.9M shares
PLUG – Plug Power Inc. – $2.26, +2.26% — ~94.1M shares
ONDS – Ondas Holdings Inc. – $8.33, −9.80% — ~86.8M shares
OPEN – Opendoor Technologies Inc. – $7.00, −5.53% — ~83.4M shares
INTC – Intel Corporation – $40.78, +0.69% — ~75.9M shares
ASST – ASST (small‑cap asset manager) – $1.00, −1.96% — ~75.0M shares
NFLX – Netflix, Inc. – $92.71, −4.14% — ~74.1M shares
F – Ford Motor Company – $13.41, +2.52% — ~72.2M shares
IBIO – iBio, Inc. – $2.81, +26.58% — ~67.0M shares
TSLA – Tesla, Inc. – $451.45, +1.41% — ~63.2M shares
SOFI – SoFi Technologies, Inc. – $27.09, +0.97% — ~61.2M shares
NXDR – Nextdoor Holdings, Inc. – $2.53, +25.87% — ~60.1M shares

The list makes clear that “most active” doesn’t just mean megacaps. Extreme moves in tiny biotechs and speculative tech names are dominating volume.

Micro‑Cap Frenzy: HeartBeam, Agape ATP, Work Medical & Paranovus

HeartBeam (BEAT): FDA clearance ignites a 90%+ surge

HeartBeam, Inc. develops cardiac‑diagnostics tech. Its stock exploded 92% higher to $1.55 on the day, leading the market in both percentage gain and trading volume. ^[5]

Catalyst: the company announced that the FDA granted 510(k) clearance for its first‑ever cable‑free, synthesized 12‑lead ECG for at‑home arrhythmia assessment, overturning a prior non‑substantial‑equivalence decision. ^[6] The clearance is a major milestone for HeartBeam’s wearable and telehealth strategy and positions it to pursue broader ECG and heart‑attack‑detection applications. ^[7]

On top of that, HC Wainwright raised its price target from $2.50 to $5.50 and reiterated a “Buy” rating, implying more than triple‑digit upside from current levels. ^[8] Those bullish targets, combined with a small float, helped fuel momentum and short‑covering.

Takeaway: HeartBeam’s volume today reflects a real fundamental catalyst (FDA clearance) in a tiny company. That’s powerful—but it also means volatility will remain extreme.

Agape ATP (ATPC): One of the ugliest crashes of the year

Agape ATP Corporation, a micro‑cap wellness and supplement company, was the second‑most‑traded stock, but for the opposite reason: it collapsed nearly 95% in a single day, falling from about $1.32 to $0.069 on Wednesday, with volume ballooning by roughly 128 million shares. ^[9]

Technical services at StockInvest describe the move as a 2,254% intraday swing between the low ($0.048) and high ($1.13), warning that such a huge breakdown on surging volume significantly raises short‑term risk. ^[10] After the close, ATPC bounced modestly in after‑hours trading, with Nasdaq and ChartMill both flagging it as a speculative rebound play following the wipe‑out. ^[11]

Notably, there was no major company‑specific news to explain the collapse. Analysts attribute the move to micro‑cap risk‑on speculation and subsequent unwinding following the Fed’s rate cut, which boosted interest in thinly traded names earlier in the week. ^[12]

Work Medical Technology Group (WOK): Volatility on steroids

Work Medical Technology Group (WOK) posted one of the wildest trading days seen in 2025. Its share price plunged 96.6% from $5.51 to $0.194, with a more than 1,000% intraday range between the low and high. ^[13]

StockInvest notes that WOK has lost about 95% over the past two weeks, while volume surged above 120 million shares on Wednesday. ^[14] MarketBeat reports the stock was hit by multiple limit‑up/limit‑down (LULD) trading halts, a common sign of volatility too extreme for most investors. ^[15]

In short: WOK’s appearance on the most‑active list is a red flag, not a bullish signal. Volume here reflects forced liquidations and speculative day‑trading.

Paranovus (PAVS): Huge revenue growth, brutal stock performance

Paranovus Entertainment Technology (PAVS) traded more than 166 million shares while falling nearly 12% to $0.0381, extending a brutal slide of over 95% in the last 10 sessions. ^[16]

Ironically, the stock’s fame came from a headline‑grabbing 18,037% year‑over‑year revenue increase in its 2025 interim results, which previously sent the shares up more than 90% in one session. ^[17] Yet Simply Wall St notes that shareholders are now sitting on around 96% losses over the past year, despite those revenue gains, underscoring how valuation and governance worries can overwhelm growth. ^[18]

Takeaway: Many of today’s most active names are lottery‑ticket micro‑caps where volume is driven by momentum, not durable fundamentals.

Space & Defense: Momentus Rockets Higher on SHIELD Win

Momentus Inc. (MNTS), a space‑infrastructure company, jumped 16.5% to $0.89 on about 141.8 million shares, landing in the top five most active stocks. ^[19]

Catalyst #1: Momentus announced it has been selected for the U.S. Missile Defense Agency’s $151 billion SHIELD IDIQ contract vehicle, giving its Vigoride orbital service vehicle a path to compete for multiple tech‑demo missions under the “Golden Dome” initiative. ^[20]

Catalyst #2: The company also disclosed a warrant‑inducement financing for $3.7 million in gross proceeds and an amendment to defer a $1 million note payment from December 2025 to May 2026, a clear sign it’s still patching together liquidity via dilution and renegotiated debt. ^[21]

A historical backtest cited by AInvest suggests that similar 35%+ intraday surges in MNTS have often faded over the following days, with negative average returns across 3‑, 10‑ and 30‑day windows. ^[22]

Takeaway: Momentus is a legitimate news‑driven gainer tied to defense spending, but the capital structure remains fragile, and past spikes have often unwound.

AI Leaders & Laggards: Nvidia, BigBear.ai and Intel

Nvidia (NVDA): AI giant under pressure despite bullish forecasts

Nvidia traded 162.5 million shares and slipped 0.64% to $183.78, but remains one of the most intensely watched stocks on the planet. ^[23]

Today’s backdrop:

Reuters reports that President Trump has conditionally approved exports of Nvidia’s H200 AI chips to China, but only if the U.S. government receives 25% of sales revenue, and Beijing has yet to sign off on the arrangement. ^[24]
At the same time, Oracle’s forecast of a $15 billion jump in AI‑data‑center spending, funded heavily by debt, has stoked fears that AI infrastructure is becoming over‑leveraged and bubble‑like, dragging Nvidia and fellow chip stocks lower in pre‑market trade. ^[25]

Despite the wobble, a recent forecast roundup shows 41 Wall Street analysts still rate NVDA a “Strong Buy” with an average 12‑month price target around $258, implying upside near 40% from Wednesday’s close. ^[26] Yet some long‑form research on Seeking Alpha argues Nvidia is “not the roaring buy it once was”, pointing to stretched valuation metrics and dependence on hyperscaler capex cycles. ^[27]

BigBear.ai (BBAI): Edge‑AI story vs. dilution risk

BigBear.ai saw 102.9 million shares change hands, closing down 1.49% at $6.61 after a year of wild swings. ^[28]

Recent news and analysis highlight a mixed picture:

The company opened its first Middle East office in Abu Dhabi’s World Trade Center, aiming to deepen defense and logistics partnerships in the region. ^[29]
Zacks and Nasdaq analysis show 2025 revenue is actually expected to decline 11%–21%, even as loss‑per‑share forecasts improve modestly for 2025–2026. ^[30]
A Motley Fool breakdown notes that shares are up more than 50% year‑to‑date, driven by enthusiasm around “edge AI” and defense data‑analytics contracts, but warns that recent shareholder votes to increase authorized shares could enable more equity dilution. ^[31]

In short, BBAI’s place on the most‑active list reflects a tug‑of‑war between a compelling AI narrative and very real financing and execution risks.

Intel (INTC): Best year since 1996, but governance questions

Intel traded 75.9 million shares, edging 0.69% higher to $40.78 and continuing a standout year. ^[32]

On the bullish side, analysts at The Motley Fool note that Intel stock has roughly doubled in 2025, putting it on track for its best annual performance since 1996, fueled by optimism around its foundry strategy and AI‑accelerator roadmap. ^[33]

However, a detailed Reuters investigation has raised conflict‑of‑interest concerns around CEO Lip‑Bu Tan, reporting that Intel pursued deals with AI startups like Rivos and SambaNova, where Tan held leadership roles and financial interests. ^[34] Intel’s board required him to recuse himself, but governance experts question whether those safeguards are sufficient.

Intel also presented at Barclays’ Global Technology Conference on December 10, reiterating its ambitions to become a leading foundry for third‑party AI chips. ^[35]

Takeaway: Intel’s high volume reflects investors trying to balance a genuine turnaround story against fresh corporate‑governance risk.

Meme‑Stock 2.0: iRobot (IRBT) and Nextdoor (NXDR)

iRobot (IRBT): Short‑squeeze play with 40% of float sold short

iRobot, maker of the Roomba vacuum, traded 129.6 million shares and soared 48.44% to $5.24, extending a roughly 72% gain over the last four days. ^[36]

Key dynamics:

Business Insider reports that around 40% of iRobot’s float is sold short, with an estimated 0.14 days to cover, creating perfect conditions for a violent short squeeze. ^[37]
MarketMinute and AInvest describe the move as a “textbook short‑squeeze scenario”, fueled by “extremely bullish” sentiment on social platforms and heavy out‑of‑the‑money call‑option buying. ^[38]
Barchart’s analysis warns that, absent new fundamental catalysts, the rally is driven almost entirely by trading dynamics and could quickly reverse. ^[39]

So while IRBT is one of the most active stocks in the U.S. right now, its investment case is dominated by short‑term positioning, not earnings or growth.

Nextdoor (NXDR): From sleepy local app to AI meme stock

Nextdoor Holdings, the neighborhood social‑networking app, traded about 60.1 million shares and jumped 25.87% to $2.53, after spiking as much as 45% intraday. ^[40]

The trigger: activist investor Eric Jackson, the hedge fund manager behind this year’s explosive rallies in Opendoor (OPEN) and Better Home & Finance (BETR), publicly called Nextdoor “the most mispriced Agentic‑AI platform of the 2020s.” ^[41]

Bloomberg and Investing.com report that Jackson sees a path to $11 per share using Reddit’s revenue multiple, and even sketched an ultra‑bull case north of $300 based on aggressive AI‑driven monetization scenarios. ^[42]
Barchart and Seeking Alpha note that trading volume hit more than 20× the three‑month average, and that the stock remains unprofitable and rated “Hold” by most analysts, making the rally more about narrative than near‑term fundamentals. ^[43]

Takeaway: IRBT and NXDR show that meme‑stock dynamics are very much alive, and they’re a big reason the “most active stocks today” list is packed with double‑digit moves.

Streaming & Storytelling: Netflix vs. Warner Bros. Discovery

Netflix (NFLX): Six‑day slide on heavy volume

Netflix traded 74.1 million shares and fell 4.14% to $92.71, marking its sixth consecutive daily decline and a roughly 11% drop over the past 10 days. ^[44]

MarketWatch notes that Netflix lagged peers like Disney and Comcast in Wednesday’s otherwise upbeat media session, while Fox Corp. and Charter Communications both logged gains as NFLX slid. ^[45] StockInvest’s technical view flags a rising volume on falling prices, a classic bearish sign, and points out that Netflix is now trading more than 25% below its 52‑week high. ^[46]

Multiple Wall Street downgrades earlier in December — including cuts from Rosenblatt and Pivotal Research — have added to the pressure as investors question subscriber growth, content spending and competition. ^[47]

Warner Bros. Discovery (WBD): Turnaround trade hits new highs

In sharp contrast, Warner Bros. Discovery saw over 103 million shares trade and gained 4.49% to $29.53, notching a fresh 52‑week high near $29.81. ^[48]

Data from Yahoo and Investing.com show WBD is up roughly 136% over the past year, with a year‑to‑date return of about 178%, as the company’s cost cuts, debt‑reduction efforts and streaming strategy begin to win over investors. ^[49]

Takeaway: Within media, today’s most active list highlights a rising divergence: Netflix as a maturing growth story, and Warner Bros. Discovery as a high‑beta turnaround that investors are increasingly willing to bet on.

EV & Clean Energy: Tesla, Ford and Plug Power

Tesla (TSLA): Robotaxis, “EV winter” and a divided Wall Street

Tesla traded 63.2 million shares and rose 1.41% to $451.45, keeping it firmly among the most‑active U.S. stocks. ^[50]

Yet sentiment around TSLA is anything but settled:

Morgan Stanley recently downgraded Tesla to “Equal Weight” from “Overweight” with a $425 price target, arguing that the current valuation already bakes in lofty expectations for AI, robotics and Full Self‑Driving amid an emerging “EV winter” of weaker demand. ^[51]
A widely read Barchart piece warns that investors must decide whether Tesla’s AI and robotaxi vision can offset slowing EV growth and rising competition, noting the stock now carries a “Hold” consensus across 40+ analysts. ^[52]
On the bullish side, Elon Musk has reiterated a three‑week countdown for fully autonomous robotaxis in Austin, Texas, saying FSD is “pretty much solved” and previewing a new FSD model for early 2026. ^[53]

With the Fed cutting rates and growth stocks in favor again, Tesla’s modest gain — despite mixed analyst signals — helps explain its continued high trading volume.

Ford (F): Rate‑sensitive cyclical catching a bid

Ford Motor Company traded over 72 million shares and rose 2.52% to $13.41, making it one of the few traditional automakers on the most‑active list. ^[54]

While there was no single major headline Wednesday, lower‑rate expectations after the Fed cut and ongoing negotiations over EV strategy and capital allocation have improved sentiment toward legacy automakers, which are highly sensitive to financing costs.

Plug Power (PLUG): NASA contract vs. liquidity worries

Plug Power, a hydrogen fuel‑cell and electrolyzer company, traded 94.1 million shares and gained 2.26% to $2.26. ^[55]

The story here is a tug‑of‑war between new contracts and financial strain:

Plug recently began a five‑year deal to supply up to 218,000 kg of liquid hydrogen to NASA, reinforcing its role in space‑related hydrogen infrastructure. ^[56]
A widely circulated analysis notes that Plug’s stock, at around $2.19–$2.23, now reflects a market cap just above $3 billion, after a brutal 2024–25 drawdown. TechStock²
The company has outlined plans to unlock more than $275 million in liquidity via asset monetization and other measures, and recently issued a $431.25 million convertible note to refinance expensive 15% debt, a move expected to save about $20 million a year in interest. ^[57]
However, Plug’s third‑quarter 2025 report showed a gross margin of −67.9%, deepening fears over the sustainability of its business model. ^[58]

Takeaway: Plug is on the most‑active list because it’s a high‑beta turnaround bet — one that still faces serious profitability and dilution risks.

Fintech, Housing & Social Platforms: SoFi and Opendoor

SoFi Technologies (SOFI): Hot stock, fresh dilution

SoFi traded 61.2 million shares and edged 0.97% higher to $27.09. ^[59]

Just days ago, the fintech announced a $1.5 billion common‑stock offering, sending shares down about 6% on fears of dilution. ^[60] Even after that drop, SoFi remains up more than 90% in 2025, thanks to strong customer growth and improving profitability. ^[61]

The company also unveiled the SoFi Smart Card on December 10, marketed as an “all‑in‑one” account that blends checking, savings and rewards, underscoring SoFi’s push to deepen customer relationships. ^[62]

Analyst coverage is mixed but generally constructive, with target prices ranging roughly from $20 to $37, according to QuiverQuant’s compilation. ^[63]

Opendoor (OPEN): Earlier meme darling links back to Nextdoor

Opendoor traded 83.4 million shares and slipped 5.53% to $7.00. ^[64]

Opendoor became one of 2025’s most dramatic meme‑stock winners, with shares rising about 350%–460% from January levels at one point, driven by an activist campaign that framed it as a misunderstood housing‑tech play. ^[65]

That same activist, Eric Jackson, is now pumping Nextdoor, explicitly comparing today’s NXDR setup to his earlier Opendoor trade — one reason traders are linking the two and trading both aggressively. ^[66]

How Traders Use the “Most Active Stocks Today” List

For day‑traders and short‑term swing traders, “most active” lists are essentially real‑time idea generators. Sites like StockAnalysis, Barchart, WallStreetZen, Morningstar and others maintain screens of daily volume leaders, often updated every few minutes. ^[67]

Common uses include:

Finding momentum trades: Surging volume combined with strong price moves (like BEAT or MNTS) can signal news‑driven trends worth riding — or fading.
Spotting blow‑ups: Massive volume on deep red days (ATPC, WOK, PAVS) flags potential capitulation or structural problems.
Tracking institutional rotations: Heavy volume in large‑caps (NVDA, TSLA, INTC, WBD) often reflects fund‑flow shifts after macro events like Fed meetings.
Identifying new meme candidates: High volume plus social‑media chatter (IRBT, NXDR, OPEN) often precede short‑squeeze or meme‑stock dynamics.

For long‑term investors, the list is more of a watchlist‑builder than a buy signal. High volume tells you where the market’s attention is, not whether a stock is fairly valued.

Bottom Line

The most active U.S. stocks today tell a story of a market caught between:

Cheaper money after another Fed rate cut,
Growing anxiety over AI‑driven bubbles, and
A revival of meme‑stock and micro‑cap speculation in the year’s final weeks.

From HeartBeam’s FDA win and Momentus’s defense contract, to Nvidia’s China export drama, Tesla’s “EV winter”, Netflix’s slump and Nextdoor’s AI‑meme moment, today’s volume leaders are a reminder that liquidity rushes to where narratives are strongest — for better or worse.

References