NASDAQ:RUBI 5 November 2025 - 12 June 2026

Rubico Inc. shares surged again on Friday, posting another big move in what’s been a wild week for the micro-cap. Traders cited a burst of ownership filings as a key driver. RUBI was recently at $0.8396, up about 35% from Thursday’s close. The stock opened at $0.7034 and hit an intraday high of $1.22. More than 200 million shares traded. Micro-caps like Rubico are known for sharp swings when volume spikes, since small demand changes can overwhelm the supply of sellers. Schedule 13G headlines set things off. On June 11, Trillium Trading said in an SEC filing it owned 175,000 Rubico Class A shares, or 5.4%, with full voting and control. The filing pointed to a new outside holder. But the next day, an amended Schedule 13G showed Trillium's stake at zero shares and zero percent, effectively wiping out the initial bullish read.

Rubico Inc shares jumped over 100% in U.S. premarket hours Tuesday as the small Nasdaq-listed tanker company drew attention before the session opened. The stock traded at $3.94 as of 9:01 a.m. EDT, jumping 127.75% from Monday’s $1.73 finish. That move came after a 6.49% drop in the previous session.

New York, March 3, 2026, 06:42 — Premarket Rubico Inc surged 53% to $1.55 ahead of Tuesday’s open, following a 20% climb to $1.01 the previous day. Monday’s session saw the stock move from $0.94 to $1.32, with volume hitting roughly 17.7 million shares.

Rubico Inc., a tiny crude‑oil shipping spin‑off, has become one of the wildest tickers on the Nasdaq Capital Market. After a dilutive equity offering, major fleet refinancing and a 1‑for‑30 reverse stock split in November, RUBI stock is now trading in the high‑$2 range on December 3, 2025 — roughly 99% below its split‑adjusted 52‑week high of about $200.70. Investing.com+1 This article pulls together the latest news, numbers, forecasts and technical signals on Rubico Inc. stock as of December 3, 2025, to give a clear, reality‑based picture of where things stand. It is informational only and not investment advice.

Rubico Inc., the tiny Greek crude‑oil tanker owner that only began trading on Nasdaq in August, is back in the spotlight today after closing a major $84 million fleet refinancing — and still seeing its stock sink around the $0.20 level. Investing.com Australia+1 The company has wrapped up sale‑and‑leaseback deals on both of its Suezmax tankers with a Chinese financier, freeing up roughly $10.4 million in cash after repaying older debt. Yet RUBI shares remain near all‑time lows after a bruising, highly dilutive $7.5 million public offering earlier this month. Investing.com Australia+2Investing.com+2

Rubico Inc. published a Form 6‑K on Friday confirming it closed a firm‑commitment public offering of 12,315,270 units on Nov. 6 at $0.609 per unit. Gross proceeds were approximately $7.5 million before fees. The underwriter partially exercised the over‑allotment option for 1,847,290 warrants at closing. SEC Post‑deal share count: Rubico reported 17,612,636 common shares outstanding after the closing. It also issued 14,162,560 investor warrants plus 615,763 representative warrants. The company’s filing notes that, if all such warrants were exercised using the “zero‑cash” option after the second reset date, up to 59,113,292 additional shares could be issued. SEC

Rubico Inc. is a Marshall Islands-incorporated shipping company providing crude oil transportation services via a small fleet of tankersglobenewswire.comglobenewswire.com. The company was created as a spin-off from TOP Ships Inc., a Greek tanker owner, to separately house two Suezmax oil tankersstocktwits.com. Both 2021-built vessels are “eco” fuel-efficient tankers on long-term time charter contracts with Clearlake, ensuring stable charter revenue streamsrivieramm.com. Rubico’s strategy focuses on owning and operating these modern tankers, leveraging their high specification and scrubber-fitted fuel efficiency to attract charterersglobenewswire.com. Founded in 2025, Rubico is headquartered in Athens, Greece with executive offices there, while incorporated offshoreglobenewswire.com. The spin-off was executed to allow TOP Ships’ shareholders to directly own Rubico’s assets – 100% of Rubico’s shares were distributed pro rata to TOP Ships investors as of June 16, 2025globenewswire.comglobenewswire.com. After some delays in regulatory approval, Rubico’s shares commenced trading on the Nasdaq Capital Market under ticker “RUBI” on August 4, 2025globenewswire.com. Notably, Rubico operates independently of TOP Ships post-spin, with no overlapping management or board membersglobenewswire.com.