$ONTO
Onto Innovation Inc.
XNYS•Technology•Measuring & Controlling Devices, Nec
Why is ONTO down today? It is at $275.29 (-0.26%), and our scanner flagged it 74 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment ONTO spikes, and full due diligence on ONTO — key stats, earnings, dilution and insider activity. Free.
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Our scanner flagged $ONTO 74 times in the last 30 days. Create a free account to track $ONTO, build a watchlist, and get instant unusual-volume alerts — plus 5 free premium days, no card needed.
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Key Stats
- Price
- $275.29
- Change today
- -0.26%
- Previous close
- $276.00
- 52-week range
- $91.61 – $386.46
- Market cap
- $13.73B
- Institutional own.
- 99.9%
- Total held
- 99.9%
- Tradeable float
- 50K 0% of shares · after 100% institutions
- Short interest
- 2.7M ▲ +2% vs prior · as of 2026-07-15
- Days to cover
- 2.0d
- Avg daily volume
- 1.1M
- Sector
- Technology
- Industry
- Measuring & Controlling Devices, Nec
- Exchange
- XNYS
- 5m
- 0.3x
- 15m
- 0.4x
- 1h
- 0.6x
- 1D
- 0.1x
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Why is $ONTO moving today?
ONTO is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 2 unusual-volume and momentum alerts on ONTO today, peaking at 2.0x its normal volume.
Likely catalystOnto Innovation Announces Pricing of Upsized Private Offering ofReported $1.3 Billion of 0.00% Convertible Senior Notes Due 2031Reported “Company”) today announced the pricing of its private offering of $1,300,000,000 aggregate principal amount of 0.00% Convertible Senior Notes due 2031 (the “Notes”) to persons reasonably believed to be qualified institutionalReported buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”). The size of the offering was increased from the previously announced $1,100,000,000 aggregate principal amount of Notes. Onto Innovation, from the latest SEC filing. Read it →Analyst data via Nasdaq. Not investment advice.
Insiders
Insiders buying6 buys, 2 sells last 3 months (14/14 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Kelley Stephen Douglas Director | Acquired (grant/award) | +761 | added 14% | 6K | n/a | May 20, 26 |
Lynch Susan D Director | Acquired (grant/award) | +761 | added 26% | 4K | n/a | May 20, 26 |
Miller David Brian Director | Acquired (grant/award) | +761 | added 6.4% | 13K | n/a | May 20, 26 |
Schwartz Stephen S Director | Acquired (grant/award) | +761 | added 27% | 4K | n/a | May 20, 26 |
Seams Christopher A Director | Acquired (grant/award) | +761 | added 2.0% | 39K | n/a | May 20, 26 |
Su May Director | Acquired (grant/award) | +761 | added 11% | 8K | n/a | May 20, 26 |
Oh Yoon Ah Officer | Sold (automatic/other) | -530 | sold 2.4% | 21K | $144K at $271.77 | May 15, 26 |
Yaldaei Ramil Officer | Sold (automatic/other) | -843 | sold 4.6% | 18K | $229K at $271.77 | May 15, 26 |
Oh Yoon Ah Officer | Sold (automatic/other) | -417 | sold 1.9% | 22K | $87K at $207.50 | Mar 3, 26 |
Plisinski Michael P Officer | Sold (automatic/other) | -4K | sold 2.0% | 179K | $776K at $207.50 | Mar 3, 26 |
Yaldaei Ramil Officer | Sold (automatic/other) | -615 | sold 3.2% | 18K | $128K at $207.50 | Mar 3, 26 |
Dolev Ido Officer | Sold (automatic/other) | -819 | sold 3.0% | 27K | $170K at $207.50 | Mar 3, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
Dilution watch
Active shelfActive shelf on file — the company can issue new shares on demand (valid ~3 years). If $ONTO runs, these filings show who may be positioned to sell new or newly-registered shares into the move.
Sourced from SEC EDGAR filings (last 9 months); terms read straight from the filing text where available. Ongoing = an at-the-market (ATM) program still selling over time or a live shelf, so it can keep diluting; Completed = a one-time priced sale that already finished. A shelf (S-3) stays effective ~3 years. Form type signals dilution capacity, not an exact share count, and we can't confirm how much of a shelf or ATM remains unused. Not investment advice.
$ONTO Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$ONTO Activity
News, unusual-volume alerts, AI-trader trades and community chatter — the whole story, newest first.
Stocks similar to ONTO
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ONTO stock FAQ
Why is $ONTO moving today?
ONTO is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 2 unusual-volume and momentum alerts on ONTO today, peaking at 2.0x its normal volume.
What is the ONTO stock price today?
ONTO last traded at $275.29, down 0.26% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live ONTO alerts?
The ONTO Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged ONTO 74 times in the last 30 days.
What exchange is ONTO on?
ONTO (Onto Innovation Inc.) trades on XNYS, with a market cap of about $13.73B in the MEASURING & CONTROLLING DEVICES, NEC sector.
Is ONTO good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge ONTO for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.