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Buy track record

How this insider's open-market purchases have performed
5%
of buys now in profit
1 up · 19 down
Avg return since buy−61.7%
Median return−65.1%
Best trade+1.6%
Worst trade−65.1%
Buys scored20
Average return by holding period — separates good entry timing from riding one long winner
After 1 month −0.1% 0% won · 20 trades
After 3 months −0.3% 0% won · 20 trades
After 6 months +0.5% 5% won · 20 trades
After 12 months −0.1% 0% won · 20 trades
DateCompany90d trendBuy priceValueΔOwn1M3M6M12MTo date
Jul 23, 2023 SYM $28 $500M NEW −1.8% −5.7% +10.4% −3.0% +1.6%
Jan 17, 2018 S $6 $5.58M +0.0% +0.0% +0.0% +0.0% −65.1%
Jan 16, 2018 S $6 $17.15M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Jan 12, 2018 S $6 $17.78M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Jan 11, 2018 S $6 $17.85M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Jan 10, 2018 S $6 $17.72M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Jan 9, 2018 S $6 $18.03M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Jan 8, 2018 S $6 $13.1M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Jan 5, 2018 S $6 $12.41M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Jan 4, 2018 S $6 $16.89M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Jan 3, 2018 S $6 $12.8M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Jan 2, 2018 S $6 $12.84M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Dec 29, 2017 S $6 $12.74M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Dec 28, 2017 S $6 $12.44M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Dec 27, 2017 S $6 $12.59M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Dec 26, 2017 S $6 $12.44M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Dec 22, 2017 S $6 $14.59M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Dec 21, 2017 S $6 $14.51M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Dec 20, 2017 S $6 $14.46M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
Dec 19, 2017 S $6 $14.3M +0.1% +0.0% +0.0% +0.0% +0.0% −65.1%
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 20 scored trades, treat this as a small sample, not a verdict.
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Open-market buys
$770.22M
20 trades
Open-market sells
$1.09B
8 trades
Net flow
−$320.59M
Net selling
Total filings
47
transactions shown

Full transaction history

All Form 4 activity across every company, newest first
View on SEC EDGAR ↗
SYM
Sell SOFTBANK GROUP CORP. · 10% Owner · Open-market sale · filed 2w ago ΔOwn −100%

Softbank Group Corp. sold $281.82M of SYM, trimming their stake 100%.

−$281.82M
5.59M sh @ $50
SYM
Sell SOFTBANK GROUP CORP. · 10% Owner · Open-market sale · filed Dec 8, 2025 ΔOwn −39%

Softbank Group Corp. sold $186.24M of SYM, trimming their stake 39%.

−$186.24M
3.5M sh @ $53
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MTBL
Sell SOFTBANK GROUP CORP. · 10% Owner · Open-market sale · filed Jan 3, 2024 ΔOwn −100%

Softbank Group Corp. sold $2.47M of MTBL, trimming their stake 100%.

−$2.47M
117.39M sh @ $0
SYM
Buy SVF II SPAC Investment 3 (DE) LLC · 10% Owner · Open-market purchase · filed Jul 25, 2023 ΔOwn NEW

Svf Ii Spac Investment 3 (de) Llc, SYM's 10% owner, spent $500M of their own money on 17.83M shares at $28, opening a brand-new position.

+$500M
17.83M sh @ $28
RENN
Sell SOFTBANK GROUP CORP. · 10% Owner · Open-market sale · filed May 25, 2023 ΔOwn −57%

Softbank Group Corp. sold $3.82M of RENN, trimming their stake 57%.

−$3.82M
152.87M sh @ $0
SOFI
Sell SOFTBANK GROUP CORP · 10% Owner · Open-market sale · filed Aug 8, 2022 ΔOwn −7.4%

Softbank Group Corp sold $54.6M of SOFI, trimming their stake 7%.

−$54.6M
6.68M sh @ $8
LCW
Sell SOFTBANK GROUP CORP · 10% Owner · Open-market sale · filed Jun 9, 2022 ΔOwn −34%

Softbank Group Corp sold $32.56M of LCW, trimming their stake 34%.

−$32.56M
3.43M sh @ $10
SOFI
Sell SOFTBANK GROUP CORP · Director, 10% Owner · Open-market sale · filed Nov 22, 2021 ΔOwn −19%

Softbank Group Corp sold $486.3M of SOFI, trimming their stake 19%.

−$486.3M
22.51M sh @ $22
S
Buy SOFTBANK GROUP CORP · 10% Owner · Open-market purchase · filed Jan 19, 2018

Softbank Group Corp, S's 10% owner, spent $5.58M of their own money on 1.01M shares at $6.

+$5.58M
1.01M sh @ $6
S
Buy SOFTBANK GROUP CORP · 10% Owner · Open-market purchase · filed Jan 17, 2018 ΔOwn +0.1%

Softbank Group Corp, S's 10% owner, spent $17.15M of their own money on 3.03M shares at $6.

+$17.15M
3.03M sh @ $6

Frequently asked questions

How is SOFTBANK GROUP CORP.'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 SOFTBANK GROUP CORP.'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.