Jim Simons
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Jim Simons’s OmniAb OABI Stock Holding History

Jim Simons’s Portfolio OABI Stock Details OABI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.48M Buy
600,350
+330,750
+123% +$657K ﹤0.01% 2132
2026
Q1 		$423K Buy
269,600
+26,900
+11% +$48.5K ﹤0.01% 2667
2025
Q4 		$449K Sell
242,700
-280,754
-54% -$488K ﹤0.01% 2619
2025
Q3 		$838K Sell
523,454
-184,096
-26% -$336K ﹤0.01% 2575
2025
Q2 		$1.23M Buy
707,550
+680,950
+2,560% +$1.14M ﹤0.01% 2397
2025
Q1 		$63.8K Buy
+26,600
New +$87K ﹤0.01% 3259
2024
Q1 		– Sell
-40,959
Closed -$253K – 3957
2023
Q4 		$253K Sell
40,959
-39,000
-49% -$192K ﹤0.01% 3051
2023
Q3 		$415K Sell
79,959
-59,900
-43% -$320K ﹤0.01% 2797
2023
Q2 		$703K Buy
+139,859
New +$567K ﹤0.01% 2693

Other funds holding OABI

Whitefort Capital Management
Whitefort Capital Management New York $406M AUM 84.26% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $85.4B AUM 91.09% 1-Year Est. Return
Cadian Capital Management
Cadian Capital Management New York $1.32B AUM 4.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Rice Hall James & Associates
Rice Hall James & Associates San Diego, California $2.05B AUM 43.16% 1-Year Est. Return
Private Management Group
Private Management Group Irvine, California $3.8B AUM 23.19% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Jim Simons's OABI Position: Q2 2026 in Review

Jim Simons increased its OmniAb (OABI) stake by 123% in Q2 2026, buying an estimated $657K and bringing the position to 600,350 shares worth $1.48M. The position accounts for ﹤0.01% of the portfolio, ranked #2132.

Jim Simons first reported a position in OABI in Q2 2023 and has held it in 9 quarters since. 131 funds tracked by Wall St. Rank hold OABI as of Q2 2026.

  • Jim Simons held 600,350 shares of OmniAb worth $1.48M as of Q2 2026.
  • Jim Simons bought 330,750 OmniAb shares in Q2 2026, an estimated $657K.
  • OmniAb made up ﹤0.01% of Jim Simons's portfolio in Q2 2026, its #2132 holding.
  • Jim Simons first reported a position in OmniAb in Q2 2023 and has held it in 9 quarters since.
  • 131 funds tracked by Wall St. Rank held OmniAb as of Q2 2026.

Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.