13FBOX
PHATHOM PHARMACEUTICALS INC · 13F Institutional Holdings
Options Calculator Rankings
P

PHATHOM PHARMACEUTICALS INC

PHAT
Institutions
164
Combined AUM (Q2 2026)
$793.8M
Combined Shares (Q2 2026)
73.1M
Overall Trend
Increase
All institutions combined
📥 Inflow (Q1 2026→Q2 2026)
+8.2M
82 · 23 New Buys · ≈
📤 Outflow (Q1 2026→Q2 2026)
-5.3M
85 · 33 Exit · ≈
⚖️ Net
+2.9M
Net Buy
💰 Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$793.8M
Institutions
164
New Buys
23
Adds
59
Reduces
52
Exits
33
Unchanged
30
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
Frazier Life Sciences Management, L.P.
2.95%3.56%#5$135.3M12.5M$138.5M12.5M00.00%Unchanged
Medicxi Ventures Management (Jersey) Ltd
45.65%8.45%#1$81.0M7.5M$82.9M7.5M00.00%Unchanged
BlackRock, Inc.
<0.01%<0.01%#78$49.1M4.5M$45.1M4.1M+463,133+11.40%Add
Invesco Ltd.
<0.01%0.01%#57$43.7M4.0M$48.0M4.3M-292,329-6.76%Reduce
Carlyle Group Inc.
0.38%0.37%#9$37.9M3.5M$38.8M3.5M00.00%Unchanged
MILLENNIUM MANAGEMENT LLC
0.01%0.02%#40$36.6M3.4M$44.7M4.0M-647,075-16.08%Reduce
VANGUARD CAPITAL MANAGEMENT LLC
<0.01%<0.01%#81$28.8M2.7M$28.7M2.6M+73,308+2.84%Add
GW&K Investment Management, LLC
0.18%0.14%#16$23.5M2.2M$15.8M1.4M+745,729+52.48%Add
FRANKLIN RESOURCES INC
<0.01%<0.01%#53$21.4M2.0M$11.0M994,504+976,324+98.17%Add
NEA Management Company, LLC
1.34%1.24%#7$21.3M2.0M$21.8M2.0M00.00%Unchanged
683 Capital Management, LLC
0.99%1.07%#8$20.1M1.9M$20.6M1.9M00.00%Unchanged
GOLDMAN SACHS GROUP INC
<0.01%<0.01%#63$19.3M1.8M$7.0M626,196+1.2M+183.94%Add
STATE STREET CORP
<0.01%<0.01%#88$17.2M1.6M$15.4M1.4M+199,433+14.38%Add
Catalys Pacific, LLC
7.06%7.19%#2$16.2M1.5M$16.6M1.5M00.00%Unchanged
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.
0.02%0.02%#31$15.9M1.5M$13.4M1.2M+257,369+21.35%Add
GEODE CAPITAL MANAGEMENT, LLC
<0.01%<0.01%#76$14.3M1.3M$14.8M1.3M-12,358-0.93%Reduce
WASATCH ADVISORS LP
0.09%0.1%#22$14.2M1.3M$14.9M1.3M-33,669-2.51%Reduce
Ensign Peak Advisors, Inc
0.02%0.03%#36$11.4M1.1M$18.1M1.6M-575,893-35.38%Reduce
Propel Bio Management, LLC
5.96%5.9%#3$11.4M1.1M$9.4M841,272+209,086+24.85%Add
Point72 Asset Management, L.P.
0.01%#42$11.1M1.0M$00+1.0MNew Buy
VANGUARD PORTFOLIO MANAGEMENT LLC
<0.01%<0.01%#100$8.6M796,631$7.4M666,029+130,602+19.61%Add
SummitTX Capital, L.P.
0.22%0.35%#15$8.6M789,550$11.1M995,885-206,335-20.72%Reduce
HSBC HOLDINGS PLC
<0.01%#59$7.7M709,695$00+709,695New Buy
CITADEL ADVISORS LLC
<0.01%<0.01%#71$7.6M696,801$10.2M918,158-221,357-24.11%Reduce
MARSHALL WACE, LLP
0.01%0.01%#50$7.2M666,090$9.6M860,692-194,602-22.61%Reduce
EcoR1 Capital, LLC
0.33%0.29%#12$6.8M625,000$6.9M625,00000.00%Unchanged
PERCEPTIVE ADVISORS LLC
0.09%0.2%#23$5.8M532,000$10.3M925,000-393,000-42.49%Reduce
TWO SIGMA INVESTMENTS, LP
<0.01%<0.01%#55$5.6M519,076$5.4M482,136+36,940+7.66%Add
NORTHERN TRUST CORP
<0.01%<0.01%#84$5.0M458,301$4.6M414,956+43,345+10.45%Add
StepStone Group LP
2.05%2.26%#6$4.7M422,085$4.7M422,08500.00%Unchanged
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
<0.01%<0.01%#82$4.5M419,094$4.5M409,015+10,079+2.46%Add
Woodline Partners LP
0.01%0.02%#41$4.0M369,052$4.1M369,05200.00%Unchanged
VANGUARD FIDUCIARY TRUST CO
<0.01%<0.01%#73$3.8M354,573$3.8M338,713+15,860+4.68%Add
Hennion & Walsh Asset Management, Inc.
0.1%0.05%#21$3.6M327,278$1.6M145,932+181,346+124.27%Add
AMERIPRISE FINANCIAL INC
<0.01%<0.01%#80$3.2M293,979$2.8M254,219+39,760+15.64%Add
JANE STREET GROUP, LLC
<0.01%<0.01%#113$3.1M289,906$979,90288,200+201,706+228.69%Add
JPMORGAN CHASE & CO
<0.01%<0.01%#124$3.0M275,251$3.0M287,430-12,179-4.24%Reduce
Simplify Asset Management Inc.
0.04%0.04%#26$2.7M249,267$2.9M262,386-13,119-5.00%Reduce
SUSQUEHANNA INTERNATIONAL GROUP, LLP
<0.01%<0.01%#118$2.7M248,325$5.1M458,079-209,754-45.79%Reduce
RENAISSANCE TECHNOLOGIES LLC
<0.01%0.01%#58$2.5M226,400$3.4M305,800-79,400-25.96%Reduce
UBS Group AG
<0.01%<0.01%#110$2.2M204,573$4.0M360,371-155,798-43.23%Reduce
NewEdge Advisors, LLC
0.01%0.01%#49$2.2M203,962$2.0M183,000+20,962+11.45%Add
Avidity Partners Management LP
0.35%0.56%#11$2.2M200,000$2.8M249,390-49,390-19.80%Reduce
MORGAN STANLEY
<0.01%<0.01%#133$2.2M199,909$3.0M255,573-55,664-21.78%Reduce
Jump Financial, LLC
0.02%<0.01%#38$2.1M191,866$293,80426,445+165,421+625.53%Add
Opaleye Management Inc.
0.18%#17$2.0M185,589$00+185,589New Buy
Trexquant Investment LP
0.01%0.02%#43$1.9M173,884$3.3M293,305-119,421-40.72%Reduce
Jones Hill Capital LP
0.37%#10$1.8M161,486$00+161,486New Buy
Bank of New York Mellon Corp
<0.01%<0.01%#111$1.7M152,313$1.4M124,018+28,295+22.82%Add
WELLS FARGO & COMPANY/MN
<0.01%<0.01%#112$1.6M152,002$512,31546,113+105,889+229.63%Add

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow