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Mark Slicer

ONTO
CHIEF FINANCIAL OFFICER · ONTO INNOVATION INC. · CIK 0001930126
FILING MIX · LIFETIME42%/58%
BUYS
11
SELLS
15
TOTAL VALUE
$2.03M
COMPANIES
1
ACTIVE SINCE
May 2022
HOLDINGS NOW
13,640
AVG SELL PX
$152.35
TRADE KIND
SHOWING 26 / 26
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
7 backtested trades · 8 horizons · 1 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Mark Slicer, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d7+57.14%+0.74%-0.99%+1.73%+1.98%—
14d7+14.29%+2.20%-0.98%+3.19%+6.10%—
30d7+0.00%+5.10%+0.77%+4.33%+5.63%—
60d7+28.57%+2.92%-0.04%+2.96%+8.48%—
90d7+28.57%+12.36%+5.27%+7.08%+19.52%—
180d7+42.86%+13.25%+13.79%-0.54%+25.47%—
1y7+42.86%+15.05%+22.13%-7.08%+30.95%—
2y7(1 pending)+66.67%+2.01%+47.95%-45.94%-58.49%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
ONTO · 13,640 shares · as of May 17, 2025
04,3468,69313,03917,385202320242025SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
FLOW · 11 buys / 15 sellsCOVERAGE · 13 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ONTO
ONTO INNOVATION INC.
SALE
Chief Financial Officer
2,066$99.40$205.4K13,640May 17, 2025May 19, 2025 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASEGRANT
Stock grant
1,471——1,471Mar 3, 2025Mar 5, 2025 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASEGRANT
Stock grant
1,470——1,470Mar 3, 2025Mar 5, 2025 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASEGRANT
Stock grant
2,941——15,706Mar 3, 2025Mar 5, 2025 ↗View →
ONTO
ONTO INNOVATION INC.
SALE
Chief Financial Officer
336$145.66$48.9K12,765Mar 1, 2025Mar 3, 2025 ↗View →
ONTO
ONTO INNOVATION INC.
SALE
Chief Financial Officer
620$176.55$109.5K13,101Feb 14, 2025Feb 19, 2025 ↗View →
ONTO
ONTO INNOVATION INC.
SALE
Chief Financial Officer
1,776$176.55$313.6K13,721Feb 14, 2025Feb 19, 2025 ↗View →
ONTO
ONTO INNOVATION INC.
SALE
Chief Financial Officer
2,282——0Feb 14, 2025Feb 19, 2025 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASE
Chief Financial Officer
4,564——15,497Feb 14, 2025Feb 19, 2025 ↗View →
ONTO
ONTO INNOVATION INC.
SALE10b5-1
10b5-1 plan
1,100$160.41$176.5K10,933Nov 15, 2024Nov 18, 2024 ↗View →
ONTO
ONTO INNOVATION INC.
SALE10b5-1
10b5-1 plan
519$217.17$112.7K12,033Jun 7, 2024Jun 7, 2024 ↗View →
ONTO
ONTO INNOVATION INC.
SALE10b5-1
10b5-1 plan
519$221.21$114.8K12,552Jun 6, 2024Jun 7, 2024 ↗View →
ONTO
ONTO INNOVATION INC.
SALE
Chief Financial Officer
1,633$223.50$365.0K13,071May 17, 2024May 21, 2024 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASEGRANT
Stock grant
2,077——14,704Mar 1, 2024Mar 5, 2024 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASEGRANT
Stock grant
1,038——1,038Mar 1, 2024Mar 5, 2024 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASEGRANT
Stock grant
1,039——1,039Mar 1, 2024Mar 5, 2024 ↗View →
ONTO
ONTO INNOVATION INC.
SALE
Chief Financial Officer
484$173.08$83.8K12,627Feb 14, 2024Feb 16, 2024 ↗View →
ONTO
ONTO INNOVATION INC.
SALE10b5-1
10b5-1 plan
601$124.31$74.7K14,787Sep 15, 2023Sep 18, 2023 ↗View →
ONTO
ONTO INNOVATION INC.
SALE10b5-1
10b5-1 plan
728$123.64$90.0K15,388Sep 15, 2023Sep 18, 2023 ↗View →
ONTO
ONTO INNOVATION INC.
SALE10b5-1
10b5-1 plan
169$127.03$21.5K13,111Sep 15, 2023Sep 18, 2023 ↗View →
ONTO
ONTO INNOVATION INC.
SALE10b5-1
10b5-1 plan
1,507$125.98$189.9K13,280Sep 15, 2023Sep 18, 2023 ↗View →
ONTO
ONTO INNOVATION INC.
SALE
Chief Financial Officer
1,269$97.95$124.3K16,116May 17, 2023May 17, 2023 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASEGRANT
Stock grant
4,564——17,385Feb 14, 2023Feb 15, 2023 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASEGRANT
Stock grant
2,282——2,282Feb 14, 2023Feb 15, 2023 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASEGRANT
Stock grant
2,281——2,281Feb 14, 2023Feb 15, 2023 ↗View →
ONTO
ONTO INNOVATION INC.
PURCHASEGRANT
Stock grant
12,821——12,821May 17, 2022May 19, 2022 ↗View →
Other insiders · ONTO
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About this filer
CIK 0001930126
ROLE
Chief Financial Officer
PRIMARY
ONTO
COMPANIES
1
ACTIVE SINCE
May 2022
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