Jane Street
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Jane Street’s XBiotech XBIT Stock Holding History

Jane Street’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
Q2 		$26.4K Sell
11,476
-48,624
-81% -$118K ﹤0.01% 11139
2026
Q1 		$141K Sell
60,100
-9,638
-14% -$23.3K ﹤0.01% 10432
2025
Q4 		$167K Buy
69,738
+13,971
+25% +$34.4K ﹤0.01% 9863
2025
Q3 		$148K Buy
55,767
+30,445
+120% +$90.2K ﹤0.01% 9888
2025
Q2 		$75.2K Buy
+25,322
New +$73.6K ﹤0.01% 9068
2024
Q4 		– Sell
-11,141
Closed -$86.1K – 10748
2024
Q3 		$86.1K Buy
+11,141
New +$73.2K ﹤0.01% 9042
2024
Q2 		– Sell
-54,822
Closed -$446K – 10290
2024
Q1 		$446K Buy
54,822
+38,495
+236% +$221K ﹤0.01% 6875
2023
Q4 		$65.3K Buy
+16,327
New +$65K ﹤0.01% 8710
2023
Q3 		– Sell
-13,207
Closed -$78.5K – 9505
2023
Q2 		$78.5K Buy
+13,207
New +$59.6K ﹤0.01% 8092
2022
Q4 		– Sell
-10,439
Closed -$38K – 10281
2022
Q3 		$38K Buy
+10,439
New +$49.1K ﹤0.01% 9027
2020
Q3 		– Sell
-115,300
Closed -$1.58M – 8037
2020
Q2 		$1.58M Sell
115,300
-26,701
-19% -$375K ﹤0.01% 3394
2020
Q1 		$1.51M Buy
+142,001
New +$2.31M ﹤0.01% 2322

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 $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
RC
RBF Capital San Francisco, California $2.41B AUM 39.41% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
BCM
Bridgeway Capital Management Houston, Texas $5.69B AUM 60.64% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Jane Street's XBIT Position: Q2 2026 in Review

Jane Street reduced its XBiotech (XBIT) stake by 81% in Q2 2026, selling an estimated $118K and leaving 11,476 shares worth $26.4K. The position accounts for ﹤0.01% of the portfolio, ranked #11139.

Jane Street first reported a position in XBIT in Q1 2020 and has held it in 12 quarters since. The position peaked at $1.58M in Q2 2020. 36 funds tracked by Wall St. Rank hold XBIT as of Q2 2026.

  • Jane Street held 11,476 shares of XBiotech worth $26.4K as of Q2 2026.
  • Jane Street sold 48,624 XBiotech shares in Q2 2026, an estimated $118K.
  • XBiotech made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #11139 holding.
  • Jane Street first reported a position in XBiotech in Q1 2020 and has held it in 12 quarters since.
  • Jane Street's XBiotech position peaked at $1.58M in Q2 2020.
  • 36 funds tracked by Wall St. Rank held XBiotech as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.