Ken Griffin’s Omeros OMER Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $2.75M | Buy |
260,048
+19,696
| +8% | +$232K | ﹤0.01% | 5441 |
|
|
2025
Q4 | $4.13M | Sell |
240,352
-152,876
| -39% | -$1.32M | ﹤0.01% | 4592 |
|
|
2025
Q3 | $1.61M | Buy |
393,228
+235,518
| +149% | +$934K | ﹤0.01% | 6508 |
|
|
2025
Q2 | $473K | Sell |
157,710
-15,316
| -9% | -$76.3K | ﹤0.01% | 8762 |
|
|
2025
Q1 | $1.42M | Buy |
173,026
+100,201
| +138% | +$885K | ﹤0.01% | 6192 |
|
|
2024
Q4 | $720K | Buy |
72,825
+22,713
| +45% | +$156K | ﹤0.01% | 7756 |
|
|
2024
Q3 | $199K | Sell |
50,112
-11,465
| -19% | -$48.9K | ﹤0.01% | 10157 |
|
|
2024
Q2 | $250K | Buy |
61,577
+24,021
| +64% | +$85.8K | ﹤0.01% | 9497 |
|
|
2024
Q1 | $130K | Sell |
37,556
-15,157
| -29% | -$57.6K | ﹤0.01% | 10982 |
|
|
2023
Q4 | $172K | Buy |
52,713
+18,871
| +56% | +$39.9K | ﹤0.01% | 10177 |
|
|
2023
Q3 | $98.8K | Buy |
33,842
+23,977
| +243% | +$96.2K | ﹤0.01% | 10912 |
|
|
2023
Q2 | $53.7K | Sell |
9,865
-127,988
| -93% | -$747K | ﹤0.01% | 11719 |
|
|
2023
Q1 | $641K | Buy |
137,853
+48,342
| +54% | +$175K | ﹤0.01% | 7786 |
|
|
2022
Q4 | $202K | Buy |
89,511
+33,609
| +60% | +$92.7K | ﹤0.01% | 10113 |
|
|
2022
Q3 | $176K | Sell |
55,902
-332,480
| -86% | -$1.54M | ﹤0.01% | 10535 |
|
|
2022
Q2 | $1.07M | Buy |
388,382
+141,566
| +57% | +$480K | ﹤0.01% | 6871 |
|
|
2022
Q1 | $1.48M | Buy |
+246,816
| New | +$1.54M | ﹤0.01% | 6750 |
|
|
2021
Q4 | – | Sell |
-45,047
| Closed | -$327K | – | 14463 |
|
|
2021
Q3 | $621K | Sell |
45,047
-11,759
| -21% | -$176K | ﹤0.01% | 9346 |
|
|
2021
Q2 | $843K | Sell |
56,806
-19,132
| -25% | -$321K | ﹤0.01% | 8794 |
|
|
2021
Q1 | $1.35M | Sell |
75,938
-49,578
| -39% | -$964K | ﹤0.01% | 7363 |
|
|
2020
Q4 | $1.79M | Sell |
125,516
-89,933
| -42% | -$1.1M | ﹤0.01% | 5565 |
|
|
2020
Q3 | $2.18M | Buy |
215,449
+51,946
| +32% | +$669K | ﹤0.01% | 4560 |
|
|
2020
Q2 | $2.41M | Buy |
163,503
+80,178
| +96% | +$1.2M | ﹤0.01% | 4246 |
|
|
2020
Q1 | $1.11M | Buy |
+83,325
| New | +$1.11M | ﹤0.01% | 5146 |
|
|
2019
Q4 | – | Sell |
-36,931
| Closed | -$541K | – | 9553 |
|
|
2019
Q3 | $603K | Sell |
36,931
-19,581
| -35% | -$336K | ﹤0.01% | 6446 |
|
|
2019
Q2 | $887K | Buy |
+56,512
| New | +$1.01M | ﹤0.01% | 5887 |
|
|
2019
Q1 | – | Sell |
-360,267
| Closed | -$5.19M | – | 9698 |
|
|
2018
Q4 | $4.01M | Sell |
360,267
-155,012
| -30% | -$2.17M | ﹤0.01% | 3099 |
|
|
2018
Q3 | $12.6M | Buy |
+515,279
| New | +$11.5M | 0.01% | 1850 |
|
|
2018
Q2 | – | Sell |
-58,739
| Closed | -$1.02M | – | 9143 |
|
|
2018
Q1 | $656K | Buy |
58,739
+27,555
| +88% | +$387K | ﹤0.01% | 5433 |
|
|
2017
Q4 | $606K | Sell |
31,184
-34,618
| -53% | -$649K | ﹤0.01% | 5370 |
|
|
2017
Q3 | $1.42M | Buy |
+65,802
| New | +$1.39M | ﹤0.01% | 3831 |
|
|
2016
Q1 | – | Sell |
-363,915
| Closed | -$4.42M | – | 7618 |
|
|
2015
Q4 | $5.72M | Sell |
363,915
-213,340
| -37% | -$2.95M | 0.01% | 1693 |
|
|
2015
Q3 | $6.33M | Buy |
577,255
+121,571
| +27% | +$1.89M | 0.01% | 1708 |
|
|
2015
Q2 | $8.2M | Buy |
455,684
+160,780
| +55% | +$3.47M | 0.01% | 1605 |
|
|
2015
Q1 | $6.5M | Buy |
294,904
+286,571
| +3,439% | +$6.54M | 0.01% | 1776 |
|
|
2014
Q4 | $206K | Sell |
8,333
-1,346
| -14% | -$24.5K | ﹤0.01% | 5952 |
|
|
2014
Q3 | $123K | Buy |
9,679
+6,220
| +180% | +$87.1K | ﹤0.01% | 6209 |
|
|
2014
Q2 | $60K | Buy |
+3,459
| New | +$43.6K | ﹤0.01% | 6635 |
|
|
2014
Q1 | – | Sell |
-1,094
| Closed | -$13.4K | – | 7967 |
|
|
2013
Q4 | $12K | Buy |
+1,094
| New | +$10.6K | ﹤0.01% | 6666 |
|
Other funds holding OMER
ISL
VCM
VPM
Ken Griffin's OMER Position: Q1 2026 in Review
Ken Griffin increased its Omeros (OMER) stake by 8.2% in Q1 2026, buying an estimated $232K and bringing the position to 260,048 shares worth $2.75M. The position accounts for ﹤0.01% of the portfolio, ranked #5441.
Ken Griffin first reported a position in OMER in Q4 2013 and has held it in 39 quarters since. The position peaked at $12.6M in Q3 2018. 162 funds tracked by Wall St. Rank hold OMER as of Q1 2026.
- Ken Griffin held 260,048 shares of Omeros worth $2.75M as of Q1 2026.
- Ken Griffin bought 19,696 Omeros shares in Q1 2026, an estimated $232K.
- Omeros made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #5441 holding.
- Ken Griffin first reported a position in Omeros in Q4 2013 and has held it in 39 quarters since.
- Ken Griffin's Omeros position peaked at $12.6M in Q3 2018.
- 162 funds tracked by Wall St. Rank held Omeros as of Q1 2026.
Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.