WhaleCreep

Which hedge funds own PHAT? PHATHOM PHARMACEUTICALS INC, Q2 2026 13F holders

HealthcareBiotechnology

37 tracked hedge funds disclosed a position in PHAT (PHATHOM PHARMACEUTICALS INC) in their Q2 2026 13F filings, worth $318.5m in total. The largest holder by portfolio weight is Propel Bio Management, LLC at 6.0% of its book. 8 opened a new position this quarter: Jones Hill Capital LP, Opaleye Management Inc., Quantbot Technologies LP, Point72 Asset Management, L.P.. 9 exited: Catalio Capital Management, LP, Burkehill Global Management, LP, Dark Forest Capital Management LP.

37
Holders
Tracked managers whose filing for the quarter reports a long equity position in the security.
8
New this quarter
Holders whose previous filing (at most two quarters earlier) did not report the security.
9
Exited this quarter
Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
$16.6m
Inflow, new holders
Combined value of the positions the new holders reported for the quarter.
$7.0m
Outflow, exits
Combined value the exiting managers reported for the security in their previous filing.
$318m
Combined value
Sum of the holders' reported positions in the security.
3.0%
Share of managers holding
Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.

Holders, Q2 2026

37 rows
Propel Bio Management, LLC Hedge fund6.0%$11.4m1.05m+25%added
Frazier Life Sciences Management, L.P. Hedge fund2.9%$135m12.47m0.0%held
683 Capital Management, LLC Hedge fund1.8%$20.1m1.85m0.0%held
Stonepine Capital Management, LLC Hedge fund0.7%$922k85,010+70%added
Diadema Partners LP Hedge fund0.5%$1.4m129,950+138%added
Carlyle Group Inc. Hedge fund0.4%$37.9m3.50m0.0%held
Jones Hill Capital LP Hedge fund0.4%$1.8m161,486–new
Avidity Partners Management LP Hedge fund0.3%$2.2m200,000−20%reduced
EcoR1 Capital, LLC Hedge fund0.3%$6.8m625,0000.0%held
Birchview Capital, LP Hedge fund0.3%$597k55,000−72%reduced
SummitTX Capital, L.P. Hedge fund0.2%$8.6m789,550−21%reduced
StepStone Group LP Hedge fund0.2%$4.6m422,0850.0%held
Opaleye Management Inc. Hedge fund0.2%$2.0m185,589–new
Persistent Asset Partners Ltd Hedge fund0.2%$517k47,663+78%added
Perceptive Advisors LLC Hedge fund0.09%$5.8m532,000−42%reduced
Campbell & CO Investment Adviser LLC Hedge fund0.04%$746k68,759+11%added
Millennium Management LLC Hedge fund0.02%$36.6m3.38m−16%reduced
ADAR1 Capital Management, LLC Hedge fund0.02%$465k42,9000.0%held
Gsa Capital Partners LLP Hedge fund0.02%$327k30,138−69%reduced
Quantbot Technologies LP Hedge fund0.02%$464k42,755–new
Point72 Asset Management, L.P. Hedge fund0.02%$11.1m1.02m–new
Engineers Gate Manager LP Hedge fund0.02%$1.3m118,257+60%added
Woodline Partners LP Hedge fund0.01%$4.0m369,0520.0%held
Trexquant Investment LP Hedge fund0.01%$1.9m173,884−41%reduced
Y-Intercept (Hong Kong) Ltd Hedge fund0.01%$432k39,845–new
Marshall Wace, LLP Hedge fund0.01%$7.2m666,090−23%reduced
Fulcrum Asset Management LLP Hedge fund0.0%$48.5k4,458–new
Two Sigma Investments, LP Hedge fund0.0%$5.6m519,076+7.7%added
Renaissance Technologies LLC Hedge fund0.0%$2.5m226,400−26%reduced
Brevan Howard Capital Management LP Hedge fund0.0%$158k14,599−85%reduced
Jain Global LLC Hedge fund0.0%$178k16,437−10.0%reduced
Citadel Advisors LLC Hedge fund0.0%$2.0m184,901−52%reduced
Squarepoint Ops LLC Hedge fund0.0%$343k31,595−89%reduced
D. E. Shaw & Co., Inc. Hedge fund0.0%$1.0m95,660−28%reduced
AQR Capital Management LLC Hedge fund0.0%$1.5m134,901+143%added
Arrowstreet Capital, Limited Partnership Hedge fund0.0%$839k77,316–new
Quarry LP Hedge fund0.0%$1.4k127–new