BlackRock
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BlackRock’s XBiotech XBIT Stock Holding History

BlackRock’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 		$689K Buy
293,104
+4,472
+2% +$10.8K ﹤0.01% 4448
2025
Q4 		$690K Sell
288,632
-13,754
-5% -$33.9K ﹤0.01% 4409
2025
Q3 		$804K Sell
302,386
-71,220
-19% -$211K ﹤0.01% 4356
2025
Q2 		$1.11M Sell
373,606
-912,157
-71% -$2.65M ﹤0.01% 4216
2025
Q1 		$4.17M Sell
1,285,763
-8,357
-0.6% -$28.8K ﹤0.01% 3713
2024
Q4 		$5.11M Buy
1,294,120
+44,119
+4% +$301K ﹤0.01% 3724
2024
Q3 		$9.66M Buy
1,250,001
+115,855
+10% +$761K ﹤0.01% 3427
2024
Q2 		$5.83M Buy
1,134,146
+827,522
+270% +$6.38M ﹤0.01% 3640
2024
Q1 		$2.49M Buy
306,624
+28,465
+10% +$163K ﹤0.01% 3928
2023
Q4 		$1.11M Sell
278,159
-676
-0.2% -$2.69K ﹤0.01% 4223
2023
Q3 		$1.15M Sell
278,835
-11,012
-4% -$55.1K ﹤0.01% 4204
2023
Q2 		$1.72M Buy
289,847
+27,651
+11% +$125K ﹤0.01% 4116
2023
Q1 		$905K Buy
262,196
+995
+0.4% +$3.71K ﹤0.01% 4363
2022
Q4 		$917K Buy
261,201
+2,267
+0.9% +$7.73K ﹤0.01% 4433
2022
Q3 		$938K Buy
258,934
+4,002
+2% +$18.8K ﹤0.01% 4499
2022
Q2 		$1.44M Sell
254,932
-774,178
-75% -$5.21M ﹤0.01% 4387
2022
Q1 		$8.89M Sell
1,029,110
-26,666
-3% -$268K ﹤0.01% 3640
2021
Q4 		$11.8M Sell
1,055,776
-167,878
-14% -$2.19M ﹤0.01% 3579
2021
Q3 		$15.8M Buy
1,223,654
+22,057
+2% +$351K ﹤0.01% 3433
2021
Q2 		$19.9M Sell
1,201,597
-155,978
-11% -$2.65M ﹤0.01% 3310
2021
Q1 		$23.3M Buy
1,357,575
+53,564
+4% +$1,000K ﹤0.01% 3098
2020
Q4 		$20.4M Buy
1,304,011
+20,301
+2% +$374K ﹤0.01% 2994
2020
Q3 		$24.5M Sell
1,283,710
-16,150
-1% -$279K ﹤0.01% 2748
2020
Q2 		$17.8M Buy
1,299,860
+8,956
+0.7% +$126K ﹤0.01% 2854
2020
Q1 		$13.7M Sell
1,290,904
-461,017
-26% -$7.5M ﹤0.01% 2814
2019
Q4 		$32.7M Buy
1,751,921
+483,022
+38% +$6.22M ﹤0.01% 2608
2019
Q3 		$13.3M Buy
1,268,899
+74,985
+6% +$611K ﹤0.01% 3055
2019
Q2 		$9.05M Buy
1,193,914
+1,088,946
+1,037% +$9.47M ﹤0.01% 3303
2019
Q1 		$1.16M Buy
104,968
+16,907
+19% +$137K ﹤0.01% 3870
2018
Q4 		$447K Buy
88,061
+654
+0.7% +$2.68K ﹤0.01% 4088
2018
Q3 		$278K Buy
87,407
+2,313
+3% +$9.01K ﹤0.01% 4257
2018
Q2 		$381K Sell
85,094
-820,971
-91% -$3.71M ﹤0.01% 4172
2018
Q1 		$4.85M Sell
906,065
-10,223
-1% -$47.1K ﹤0.01% 3434
2017
Q4 		$3.61M Sell
916,288
-555,485
-38% -$2.34M ﹤0.01% 3536
2017
Q3 		$6.43M Buy
1,471,773
+29,832
+2% +$141K ﹤0.01% 3385
2017
Q2 		$6.78M Buy
1,441,941
+150,783
+12% +$1.44M ﹤0.01% 3368
2017
Q1 		$21.3M Buy
1,291,158
+1,290,253
+142,569% +$16.9M ﹤0.01% 2720
2016
Q4 		$9K Hold
905
– – ﹤0.01% 3423
2016
Q3 		$12K Buy
905
+254
+39% +$3.73K ﹤0.01% 3374
2016
Q2 		$14K Buy
651
+537
+471% +$7.75K ﹤0.01% 3351
2016
Q1 		$1K Buy
+114
New +$944 ﹤0.01% 3575

Other funds holding XBIT

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 $2.9T AUM 29.55% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return

BlackRock's XBIT Position: Q1 2026 in Review

BlackRock increased its XBiotech (XBIT) stake by 1.5% in Q1 2026, buying an estimated $10.8K and bringing the position to 293,104 shares worth $689K. The position accounts for ﹤0.01% of the portfolio, ranked #4448.

BlackRock first reported a position in XBIT in Q1 2016 and has held it in 41 quarters since. The position peaked at $32.7M in Q4 2019. 37 funds tracked by Wall St. Rank hold XBIT as of Q1 2026.

  • BlackRock held 293,104 shares of XBiotech worth $689K as of Q1 2026.
  • BlackRock bought 4,472 XBiotech shares in Q1 2026, an estimated $10.8K.
  • XBiotech made up ﹤0.01% of BlackRock's portfolio in Q1 2026, its #4448 holding.
  • BlackRock first reported a position in XBiotech in Q1 2016 and has held it in 41 quarters since.
  • BlackRock's XBiotech position peaked at $32.7M in Q4 2019.
  • 37 funds tracked by Wall St. Rank held XBiotech as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.