MTSI
+$0
6,656 sh
CHUNG PETER Y
Director, 10% Owner · SEC CIK 1239366Advertisement
Buy track record
How this insider's open-market purchases have performedThis insider has no open-market purchases in the records we parsed, so there's no buy track record to score. Their full filing history is below.
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Open-market buys
$3.25M
1 trades
Open-market sells
$512.75M
14 trades
Net flow
−$509.5M
Net selling
Total filings
43
transactions shown
Full transaction history
All Form 4 activity across every company, newest firstACIA
−$67.93M
1.3M sh @ $52
ATEN
+$0
23,112 sh
ACIA
+$0
6,144 sh
CASA
−$117.94M
4.72M sh @ $25
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MTSI
+$0
6,086 sh
CASA
+$0
38.59M sh
CASA
Chung Peter Y, CASA's 10% owner, spent $3.25M of their own money on 250,000 shares at $13, growing their stake 1%.
+$3.25M
250,000 sh @ $13
ATEN
+$0
18,359 sh
ACIA
+$0
4,446 sh
ACIA
−$62.81M
1.25M sh @ $50
MTSI
+$0
2,835 sh
MTSI
Chung Peter Y sold $55.94M of MTSI, trimming their stake 99%.
−$55.94M
1.2M sh @ $47
Frequently asked questions
How is CHUNG PETER Y's win rate calculated?
We take every open-market purchase (SEC code P) we can match to a stock price, then compare the split- and dividend-adjusted price on the purchase date to the most recent close. The win rate is the share of those buys currently trading above the purchase price. Sales and share grants are not scored.
Why are some buys not included in the score?
A purchase is excluded if we can't price it — for example if the ticker is missing from the filing, the company has been delisted, or the security isn't a common stock we can match to market data. Excluded counts are shown next to the scored total.
What do the 1M / 3M / 6M / 12M columns mean?
They show each purchase's return after a fixed holding period — one, three, six, and twelve months from the buy date — using split- and dividend-adjusted prices. This separates good entry timing from simply holding a long-running winner. A dash means that horizon hasn't elapsed yet for that trade, or the stock couldn't be priced at that date.
Does a high win rate mean I should copy this insider?
No. Past performance does not predict future results, sample sizes are often small, and an insider's edge in their own company doesn't transfer to yours. This is context, not a recommendation. InsiderSource is not investment advice.
Where does this data come from?
Trades come from CHUNG PETER Y's SEC Form 4 filings on EDGAR. Prices come from public market data and are split/dividend-adjusted. Always verify against the original filings before acting.