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VK

Victor Ku

BFLY
CHIEF TECHNOLOGY OFFICER · BUTTERFLY NETWORK, INC. · CIK 0002087062
FILING MIX · LIFETIME60%/40%
BUYS
3
SELLS
2
TOTAL VALUE
$418.1K
COMPANIES
1
ACTIVE SINCE
Sep 2025
HOLDINGS NOW
1,063,639
AVG SELL PX
$5.84
TRADE KIND
SHOWING 5 / 5
Trades · vs SPY
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Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 2 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Victor Ku, 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
7d1+0.00%+10.34%+1.08%+9.25%+9.25%
14d1+0.00%+6.72%-1.47%+8.19%+8.19%
30d1+100.00%-5.17%-0.22%-4.95%-4.95%
60d1+100.00%-5.68%-2.23%-3.45%-3.45%
90d1+0.00%+6.72%-4.19%+10.90%+10.90%
180d1+0.00%+98.45%+8.30%+90.15%+90.15%
1y1(1 pending)
2y1(1 pending)
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
BFLY · 1,063,639 shares · as of Jul 7, 2026
0274,822549,644824,4661,099,2882026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2025
2025
2026
2026
2026
FLOW · 3 buys / 2 sellsCOVERAGE · 5 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
BFLY
BUTTERFLY NETWORK, INC.
SALE
Chief Technology Officer
35,649$7.87$280.7K1,063,639Jul 7, 2026Jul 8, 2026View →
BFLY
BUTTERFLY NETWORK, INC.
PURCHASEGRANT
Stock grant
287,3261,099,288Mar 2, 2026Mar 4, 2026View →
BFLY
BUTTERFLY NETWORK, INC.
SALE
Chief Technology Officer
35,968$3.82$137.4K811,962Jan 5, 2026Jan 7, 2026View →
BFLY
BUTTERFLY NETWORK, INC.
PURCHASEGRANT
Stock grant
282,643847,930Sep 22, 2025Sep 24, 2025View →
BFLY
BUTTERFLY NETWORK, INC.
PURCHASEGRANT
Stock grant
565,287565,287Sep 22, 2025Sep 24, 2025View →
Other insiders · BFLY
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About this filer
CIK 0002087062
ROLE
Chief Technology Officer
PRIMARY
BFLY
COMPANIES
1
ACTIVE SINCE
Sep 2025
MARKETPEEL · /INSIDER/0002087062DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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