Marshall Wace
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Marshall Wace’s State Street SPDR S&P Biotech ETF XBI Stock Holding History

Marshall Wace’s Portfolio XBI Stock Details XBI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-300,000
Closed -$30.1M – 3553
2025
Q3 		$30.1M Buy
+300,000
New +$27M 0.03% 493
2025
Q2 		– Sell
-200,000
Closed -$16.2M – 3242
2025
Q1 		$16.2M Buy
+200,000
New +$17.9M 0.02% 576
2024
Q3 		– Sell
-271,000
Closed -$25.1M – 3009
2024
Q2 		$25.1M Buy
+271,000
New +$24.3M 0.03% 431
2024
Q1 		– Sell
-754,900
Closed -$67.4M – 2850
2023
Q4 		$67.4M Buy
754,900
+366,500
+94% +$27.2M 0.11% 179
2023
Q3 		$28.4M Buy
388,400
+270,000
+228% +$21.6M 0.06% 333
2023
Q2 		$9.85M Sell
118,400
-500,700
-81% -$41.9M 0.02% 733
2023
Q1 		$47.2M Buy
619,100
+400,500
+183% +$33.2M 0.1% 226
2022
Q4 		$18.1M Sell
218,600
-355,100
-62% -$28.7M 0.04% 488
2022
Q3 		$45.5M Buy
573,700
+544,700
+1,878% +$45.9M 0.1% 220
2022
Q2 		$2.15M Buy
+29,000
New +$2.18M ﹤0.01% 1938
2022
Q1 		– Sell
-29,300
Closed -$3.28M – 4107
2021
Q4 		$3.28M Sell
29,300
-151,400
-84% -$18.3M 0.01% 1703
2021
Q3 		$22.7M Sell
180,700
-296,500
-62% -$38.2M 0.09% 234
2021
Q2 		$64.6M Buy
477,200
+453,500
+1,914% +$59.6M 0.29% 59
2021
Q1 		$3.21M Buy
+23,700
New +$3.55M 0.01% 1072

Other funds holding XBI

Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
BNP Paribas Financial Markets
BNP Paribas Financial Markets Paris, France $206B AUM 31.61% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund Toronto, Ontario, Canada $62.2B AUM 31.35% 1-Year Est. Return
Citigroup
Citigroup New York $235B AUM 32.99% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return

Marshall Wace's XBI Position: Q4 2025 in Review

Marshall Wace sold out of State Street SPDR S&P Biotech ETF (XBI) in Q4 2025, closing a stake of 34,292 shares — an estimated $3.44M sold.

Marshall Wace first reported a position in XBI in Q1 2017 and held it in 18 quarters. The position peaked at $18.3M in Q4 2017. 813 funds tracked by Wall St. Rank hold XBI as of Q4 2025.

  • Marshall Wace reported no remaining State Street SPDR S&P Biotech ETF position as of Q4 2025 after selling out during the quarter.
  • Marshall Wace sold 34,292 State Street SPDR S&P Biotech ETF shares in Q4 2025, an estimated $3.44M.
  • Marshall Wace first reported a position in State Street SPDR S&P Biotech ETF in Q1 2017 and held it in 18 quarters.
  • Marshall Wace's State Street SPDR S&P Biotech ETF position peaked at $18.3M in Q4 2017.
  • 813 funds tracked by Wall St. Rank held State Street SPDR S&P Biotech ETF as of Q4 2025.

Based on Marshall Wace's 13F filing for Q4 2025, filed 13 Feb 2026.