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Seaport Therapeutics, Inc. hedge fund holdings

SPTXNASDAQ
$18.50+0.08 (+0.43% today)

Every quarter, large institutional investment managers with over $100M in U.S.-listed assets under management disclose their U.S. equity holdings through 13F filings. Read together, those filings show which businesses professional capital is moving into and out of.

Price vs funds buying and selling

SPTX · close · 13FReported Aug 14, 2026

Price vs funds buying and selling data

Showing the 1Y range: May 1, 2026 to Oct 5, 2026. Price (-6.8%). 0 fund reports plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
DateCategoryPersonRoleActionAmountChange in holding
Funds buying · new + increased
Funds selling · reduced + closed
Net buyers vs sellers
Buying = new + increased; selling = reduced + closed. Counts exclude position changes under 5% of the fund's holding last quarter.

Price and fund activity data

Quarterly 13F fund buying and selling activity
QuarterFunds buyingFunds sellingBoughtSoldFilersReported
Q2 2026430$755M$052Aug 14, 2026

Quarterly action breakdown

Q2 2026Premium
Premium52 filers
New position
43
$755M+34.8M sh
Increased
0
$00 sh
Reduced
0
$00 sh
Out / sold
0
$00 sh
Last 4 quarters · free
Reported Aug 14, 2026
FundActionChange in dollarValue% of portfolioReported
ARCH Venture Management, LLCNew Buy+$137M$137M12.42%Aug 14, 2026
General Atlantic, L.P.New Buy+$133M$133M4.56%Aug 14, 2026
Sofinnova Investments, Inc.New Buy+$77.4M$77.4M4.00%Aug 14, 2026
TRV GP VI, LLCNew Buy+$44.8M$44.8M19.27%Aug 10, 2026
Canada Pension Plan Investment BoardNew Buy+$42.9M$42.9M0.02%Aug 14, 2026
Foresite Capital Management VI LLCNew Buy+$38.7M$38.7M6.02%Aug 14, 2026
Bellevue Group AGNew Buy+$23.9M$23.9M0.50%Aug 14, 2026
Siren, L.L.C.New Buy+$23.8M$23.8M0.48%Aug 13, 2026
Jennison Associates LLCNew Buy+$23.5M$23.5M0.01%Aug 3, 2026
Ra Capital Management, L.P.New Buy+$15.2M$15.2M0.13%Aug 14, 2026
Perceptive Advisors LLCNew Buy+$10.9M$10.9M0.16%Aug 14, 2026
Braidwell LPNew Buy+$10.9M$10.9M0.40%Aug 14, 2026
Aberdeen Group plcNew Buy+$6.74M$6.74M0.01%Jul 31, 2026
Seven Grand Managers, LLCNew Buy+$4.89M$4.89M0.20%Aug 14, 2026
Pier Capital, LLCNew Buy+$3.69M$3.69M0.49%Aug 5, 2026
Pentwater Capital Management LPNew Buy+$1.8M$1.8M0.01%Aug 14, 2026
DAFNA Capital Management LLCNew Buy+$704K$704K0.13%Aug 14, 2026
ADAR1 Capital Management, LLCNew Buy+$565K$565K0.03%Aug 14, 2026
Burkehill Global Management, LPNew Buy+$543K$543K0.02%Aug 14, 2026
Weiss Asset Management LPNew Buy+$217K$217K0.00%Aug 14, 2026
Assetmark, IncNew Buy+$31.1K$31.1K0.00%Jul 30, 2026
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