Protagonist Therapeutics
PTGX · NASDAQ
$137.99+$3.55 (+2.64%)TodayMarket closed ·
Prev close $134.44
Who owns PTGX
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 64.4% of PTGX’s shares.
- BlackRock Institutional Trust Company, N.A.13.8%
- Farallon Capital Management, L.L.C.9.9%
- RTW Investments L.P.7.9%
- Vanguard Portfolio Management, LLC5.6%
- Next 6 largest institutions27.2%
- All other shareholders35.6%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 8.87M | 13.80% |
| Farallon Capital Management, L.L.C. | 6.35M | 9.87% |
| RTW Investments L.P. | 5.06M | 7.87% |
| Vanguard Portfolio Management, LLC | 3.63M | 5.64% |
| Wellington Management Company, LLP | 3.42M | 5.31% |
| UBS Financial Services, Inc. | 3.33M | 5.18% |
| State Street Investment Management (US) | 3.32M | 5.16% |
| Vanguard Capital Management, LLC | 2.85M | 4.44% |
| Johnson & Johnson Innovation-JJDC, Inc. | 2.45M | 3.81% |
| Janus Henderson Investors | 2.13M | 3.31% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.68M | 5.73% |
| Vanguard Total Stock Market Index Fund | 2.05M | 3.19% |
| iShares Russell 2000 ETF | 1.59M | 2.47% |
| Vanguard Small-Cap Index Fund | 1.48M | 2.30% |
| Vanguard Health Care Fund | 1.38M | 2.15% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $65.49M (17 trades) of PTGX on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Ali Asif | Option exercise | 5.31K | — |
| Ali Asif | Option exercise | 15.65K | — |
| Ali Asif | Option exercise | 28.44K | — |
| Ali Asif | Option exercise | 9.23K | — |
| Ali Asif | Sale | 46.03K | $6.53M |
| Ali Asif | Sale | 12.60K | $1.79M |
| Ali Asif | Option exercise | 5.31K | $64.65K |
| Ali Asif | Option exercise | 15.65K | $300.32K |
| Ali Asif | Option exercise | 28.44K | $666.02K |
| Ali Asif | Option exercise | 9.23K | $359.75K |
Short interest
Settled Sep 30, 2026
- Shares short
- 9.35M
- Days to cover
- 11.49
- % of shares outstanding
- 14.53%
- Average daily volume
- 813.30K
- Change since last report
- +14.8%
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