Jim Simons
XBIT icon

Jim Simons’s XBiotech XBIT Stock Holding History

Jim Simons’s Portfolio XBIT Stock Details XBIT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$52.7K Buy
+22,438
New +$54.3K ﹤0.01% 3106
2023
Q4 		– Sell
-15,287
Closed -$63K – 4201
2023
Q3 		$63K Sell
15,287
-13,048
-46% -$65.3K ﹤0.01% 3355
2023
Q2 		$168K Sell
28,335
-24,160
-46% -$109K ﹤0.01% 3333
2023
Q1 		$181K Sell
52,495
-48,973
-48% -$182K ﹤0.01% 3320
2022
Q4 		$356K Sell
101,468
-54,000
-35% -$184K ﹤0.01% 3151
2022
Q3 		$563K Buy
155,468
+76,800
+98% +$362K ﹤0.01% 2860
2022
Q2 		$443K Buy
+78,668
New +$529K ﹤0.01% 3226

Other funds holding XBIT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
RC
RBF Capital San Francisco, California $2.05B AUM 29.64% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
BCM
Bridgeway Capital Management Houston, Texas $4.97B AUM 44.96% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Jim Simons's XBIT Position: Q1 2026 in Review

Jim Simons opened a new position in XBiotech (XBIT) in Q1 2026: 22,438 shares worth $52.7K. The stake represents ﹤0.01% of the portfolio and ranks #3106 among its holdings. This is a return to the name: Jim Simons previously reported a position in XBIT as recently as Q3 2023.

Jim Simons first reported a position in XBIT in Q2 2022 and has held it in 7 quarters since. The position peaked at $563K in Q3 2022. 37 funds tracked by Wall St. Rank hold XBIT as of Q1 2026.

  • Jim Simons held 22,438 shares of XBiotech worth $52.7K as of Q1 2026.
  • XBiotech was a new Jim Simons position in Q1 2026.
  • XBiotech made up ﹤0.01% of Jim Simons's portfolio in Q1 2026, its #3106 holding.
  • Jim Simons first reported a position in XBiotech in Q2 2022 and has held it in 7 quarters since.
  • Jim Simons's XBiotech position peaked at $563K in Q3 2022.
  • 37 funds tracked by Wall St. Rank held XBiotech as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.