GH
−$3.41M
42,402 sh @ $80
Talasaz AmirAli
Director, Co-Chief Executive Officer, Chairman, President and COO · SEC CIK 1753159
Insider at
GH Guardant Health, Inc.
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Buy track record
How this insider's open-market purchases have performed100%
of buys now in profit
14 up · 0 down
Avg return since buy+195.9%
Median return+41.7%
Best trade+409.0%
Worst trade+34.9%
Buys scored14
Average return by holding period — separates good entry timing from riding one long winner
After 1 month
+0.1%
57% won · 14 trades
After 3 months
−1.5%
43% won · 14 trades
After 6 months
−25.3%
43% won · 14 trades
After 12 months
−39.0%
0% won · 14 trades
| Date | Company | 90d trend | Buy price | Value | ΔOwn | 1M | 3M | 6M | 12M | To date |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 14, 2023 | GH | $26 | $224.4K | +0.4% | −8.2% | +42.4% | +15.2% | −31.2% | +393.1% | |
| Mar 14, 2023 | GH | $26 | $112.2K | +21% | −8.2% | +42.4% | +15.2% | −31.2% | +393.1% | |
| Mar 13, 2023 | GH | $25 | $302K | +0.7% | −4.1% | +45.6% | +24.7% | −26.5% | +409.0% | |
| Mar 13, 2023 | GH | $26 | $724.2K | +1.5% | −4.1% | +45.6% | +24.7% | −26.5% | +409.0% | |
| Mar 13, 2023 | GH | $25 | $151K | NEW | −4.1% | +45.6% | +24.7% | −26.5% | +409.0% | |
| Mar 13, 2023 | GH | $26 | $362.1K | +228% | −4.1% | +45.6% | +24.7% | −26.5% | +409.0% | |
| Nov 23, 2021 | GH | $92 | $557.6K | +0.3% | +4.9% | −35.8% | −59.1% | −46.1% | +41.7% | |
| Nov 23, 2021 | GH | $93 | $2.18M | +1.3% | +4.9% | −35.8% | −59.1% | −46.1% | +41.7% | |
| Nov 23, 2021 | GH | $94 | $470K | +0.3% | +4.9% | −35.8% | −59.1% | −46.1% | +41.7% | |
| Nov 23, 2021 | GH | $96 | $477.5K | +0.3% | +4.9% | −35.8% | −59.1% | −46.1% | +41.7% | |
| Nov 23, 2021 | GH | $97 | $1.44M | +0.8% | +4.9% | −35.8% | −59.1% | −46.1% | +41.7% | |
| Nov 23, 2021 | GH | $98 | $9.8K | — | +4.9% | −35.8% | −59.1% | −46.1% | +41.7% | |
| Nov 19, 2021 | GH | $98 | $3.69M | +2.2% | +2.1% | −36.6% | −64.4% | −50.6% | +34.9% | |
| Nov 19, 2021 | GH | $99 | $1.21M | +0.7% | +2.1% | −36.6% | −64.4% | −50.6% | +34.9% |
How this is calculated. We score only open-market purchases (SEC code
P) — the buys that carry real signal. Each trade's return is measured from the adjusted closing price on the purchase date to the latest close, accounting for stock splits and dividends. The 1M/3M/6M/12M columns show the same trade's return after each fixed holding period; a dash means that horizon hasn't elapsed yet or isn't priceable. Sales are excluded because insiders sell for many routine reasons. With only 14 scored trades, treat this as a small sample, not a verdict.
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Open-market buys
$11.92M
14 trades
Open-market sells
$325.98M
184 trades
Net flow
−$314.06M
Net selling
Total filings
253
transactions shown
Full transaction history
All Form 4 activity across every company, newest firstGH
−$1.81M
22,298 sh @ $81
GH
−$2.9M
35,300 sh @ $82
GH
+$11.7K
2,800 sh @ $4
GH
−$450.8K
5,970 sh @ $76
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GH
−$117.1K
1,530 sh @ $77
GH
−$217.7K
2,806 sh @ $78
GH
−$56.7K
724 sh @ $78
GH
−$1.62M
20,153 sh @ $80
GH
+$56.2K
13,435 sh @ $4
GH
−$1.07M
14,742 sh @ $73
GH
−$3.32M
45,258 sh @ $73
GH
−$293.9K
3,971 sh @ $74
Frequently asked questions
How is Talasaz AmirAli'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 Talasaz AmirAli'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.