Arista Networks, Inc. NYSE:ANET wiped out $15 billion in market cap after insiders announced plans to sell. The sales put the stock’s premium in the spotlight. New York, July 15, 2026, 14:06 EDT
Arista Networks slipped 6.6% Wednesday afternoon, wiping out about $15.4 billion in market value at the lows. CEO Jayshree Ullal disclosed $43.9 million in stock sales on July 10 from family and children’s trusts, according to a Tuesday filing. The sales were done under a prearranged plan.
The new filing brings the total sold by Ullal, 10% holder Andreas Bechtolsheim and director Charles Giancarlo this month to 985,000 shares, or $172.6 million. Shares lost about 89 times that amount in market value on Wednesday. The stock finished at $170.50, down 2.7% from the group’s weighted-average sale price of $175.23. That’s a lot of cash for the insiders, but only a small slice for a company with a $217 billion market cap.
Arista is set to release Q2 results Aug. 4, less than three weeks out. At 57.5x trailing earnings, every 1% move in the stock shifts its market cap by about $2.2 billion. That means even small changes in margin views can overshadow the impact from recent insider trades. It’s the valuation that’s driving the story, not the volume of SEC filings.
No new bearish calls from the management in these filings. All the trades went through existing Rule 10b5-1 plans. Ullal’s plan was set last November for 2025, Bechtolsheim’s dates to February 2026, Giancarlo’s is for June 2025. Ullal’s latest sales averaged $187.18, roughly 8.9% above the stock’s last quote on Wednesday.
Looking at each filing, the numbers stack up like this. Proceeds are based on the weighted-average prices in every filing.
| Insider | Reported role | Trade dates | Shares sold | Proceeds | Average price |
|---|---|---|---|---|---|
| Jayshree Ullal | CEO and chair | July 9-10 | 477,000 | $89.52 million | $187.68 |
| Andreas Bechtolsheim | 10% owner | July 1-2 | 500,000 | $81.74 million | $163.48 |
| Charles Giancarlo | Director | July 1 | 8,000 | $1.34 million | $167.06 |
| Total | 985,000 | $172.60 million | $175.23 |
Arista’s earnings multiple is still around 55% higher than Cisco Systems NASDAQ:CSCO and 80% above NVIDIA Corp. NASDAQ:NVDA, even after the drop. The companies don’t run the same business, but the gap suggests the market is still pricing in strong growth for Arista. Latest quotes as of about 13:51 EDT:
| Company | Share price | Intraday move | Trailing P/E | Market value |
|---|---|---|---|---|
| Arista Networks NYSE:ANET | $170.50 | down 6.6% | 57.5 times | $217.0 billion |
| Cisco Systems NASDAQ:CSCO | $112.00 | off 4.4% | 37.2 times | $445.8 billion |
| NVIDIA Corp. NASDAQ:NVDA | $209.45 | fell 1.1% | 31.9 times | $5.11 trillion |
The premium still has its backers. TD Cowen’s Sean O’Loughlin bumped his price target to $210 from $200 this week and stuck with a Buy. He told The Fly sector fundamentals “remain firm.” That target is about 23% above the $170.50 level. O’Loughlin pointed to new artificial-intelligence launches in the second half as a key driver for the stock. TipRanks
First-quarter numbers give bulls a reason to stay long. Revenue was up 35.1% at $2.709 billion. The adjusted operating margin, stripping out certain items, stayed at 47.8%. Arista is looking for second-quarter revenue of around $2.8 billion, aiming for a 46%-47% adjusted operating margin, and adjusted earnings close to $0.88 per share.
But the supply chain comes with a big financial load. Arista reported $8.9 billion in non-cancellable purchase obligations as of March 31, or about 72% of its cash and marketable securities. $7.6 billion is due inside a year. Gross margin dropped to 61.9% from 63.7% a year ago. The company said high obligations and changes in demand could mean excess or obsolete stock. CFO Chantelle Breithaupt said in May that macro and supply chain conditions “remain dynamic.” SEC
August 4 shapes up as a key check on whether Wednesday’s reset was enough to clear the premium. If Arista meets the $2.8 billion revenue goal and margins hold steady, TD Cowen’s call still works. But if the company misses or its inventory risk grows, it gets tougher to justify the gap to Cisco and NVIDIA.
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