Janus Henderson Group
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Janus Henderson Group’s Olema Pharmaceuticals OLMA Stock Holding History

Janus Henderson Group’s Portfolio OLMA Stock Details OLMA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$106M Buy
7,108,488
+398,294
+6% +$8.87M 0.05% 278
2025
Q4 		$168M Buy
6,710,194
+3,124,345
+87% +$55.6M 0.08% 214
2025
Q3 		$35.1M Buy
3,585,849
+563,065
+19% +$3.38M 0.02% 486
2025
Q2 		$12.9M Buy
+3,022,784
New +$13.5M 0.01% 663
2025
Q1 		– Sell
-17,800
Closed -$104K – 2530
2024
Q4 		$104K Hold
17,800
– – ﹤0.01% 2509
2024
Q3 		$212K Sell
17,800
-38,200
-68% -$488K ﹤0.01% 2414
2024
Q2 		$605K Sell
56,000
-1,165,662
-95% -$12.6M ﹤0.01% 1891
2024
Q1 		$13.8M Buy
1,221,662
+521,562
+74% +$6.73M 0.01% 629
2023
Q4 		$9.81M Buy
+700,100
New +$9.41M 0.01% 673
2023
Q2 		– Sell
-2,085,179
Closed -$7.28M – 2646
2023
Q1 		$7.28M Sell
2,085,179
-972,127
-32% -$3.97M ﹤0.01% 781
2022
Q4 		$7.47M Sell
3,057,306
-3,736,068
-55% -$10.9M 0.01% 778
2022
Q3 		$18.7M Buy
6,793,374
+3,472,241
+105% +$14.7M 0.01% 691
2022
Q2 		$13.5M Sell
3,321,133
-236,301
-7% -$749K 0.01% 629
2022
Q1 		$15.1M Buy
3,557,434
+561,994
+19% +$3.1M 0.01% 805
2021
Q4 		$28M Buy
2,995,440
+519,610
+21% +$10.8M 0.01% 705
2021
Q3 		$68.2M Sell
2,475,830
-748,848
-23% -$20.2M 0.03% 466
2021
Q2 		$90.3M Sell
3,224,678
-350,890
-10% -$9.98M 0.04% 400
2021
Q1 		$114M Sell
3,575,568
-63,270
-2% -$2.71M 0.05% 336
2020
Q4 		$161M Buy
+3,638,838
New +$171M 0.07% 267

Other funds holding OLMA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
PBA
Paradigm Biocapital Advisors New York $4.89B AUM 251.12% 1-Year Est. Return
BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.11B AUM 171.34% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
CAM
Cormorant Asset Management Boston, Massachusetts $1.99B AUM 737.95% 1-Year Est. Return
LGM
Logos Global Management San Francisco, California $2B AUM 444.09% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Janus Henderson Group's OLMA Position: Q1 2026 in Review

Janus Henderson Group increased its Olema Pharmaceuticals (OLMA) stake by 5.9% in Q1 2026, buying an estimated $8.87M and bringing the position to 7,108,488 shares worth $106M. The position accounts for 0.05% of the portfolio, ranked #278.

Janus Henderson Group first reported a position in OLMA in Q4 2020 and has held it in 19 quarters since. The position peaked at $168M in Q4 2025. 195 funds tracked by Wall St. Rank hold OLMA as of Q1 2026.

  • Janus Henderson Group held 7,108,488 shares of Olema Pharmaceuticals worth $106M as of Q1 2026.
  • Janus Henderson Group bought 398,294 Olema Pharmaceuticals shares in Q1 2026, an estimated $8.87M.
  • Olema Pharmaceuticals made up 0.05% of Janus Henderson Group's portfolio in Q1 2026, its #278 holding.
  • Janus Henderson Group first reported a position in Olema Pharmaceuticals in Q4 2020 and has held it in 19 quarters since.
  • Janus Henderson Group's Olema Pharmaceuticals position peaked at $168M in Q4 2025.
  • 195 funds tracked by Wall St. Rank held Olema Pharmaceuticals as of Q1 2026.

Based on Janus Henderson Group's 13F filing for Q1 2026, filed 15 May 2026.