Jane Street
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Jane Street’s ProShares UltraShort NASDAQ Biotechnology BIS Stock Holding History

Jane Street’s Portfolio BIS Stock Details BIS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2018
Q1 		– Sell
-2,313
Closed -$408K – 4805
2017
Q4 		$408K Buy
2,313
+850
+58% +$151K ﹤0.01% 3411
2017
Q3 		$241K Buy
+1,463
New +$264K ﹤0.01% 3933
2016
Q4 		– Sell
-2,163
Closed -$547K – 4023
2016
Q3 		$547K Sell
2,163
-20,037
-90% -$5.32M ﹤0.01% 2675
2016
Q2 		$7.39M Sell
22,200
-5,338
-19% -$1.69M 0.04% 453
2016
Q1 		$9.6M Buy
27,538
+15,638
+131% +$5.44M 0.05% 316
2015
Q4 		$2.73M Buy
11,900
+9,975
+518% +$2.56M 0.02% 829
2015
Q3 		$594K Sell
1,925
-900
-32% -$212K ﹤0.01% 2126
2015
Q2 		$649K Buy
+2,825
New +$701K ﹤0.01% 2028
2014
Q3 		– Sell
-650
Closed -$370K – 2542
2014
Q2 		$370K Buy
650
+320
+97% +$220K ﹤0.01% 1663
2014
Q1 		$235K Buy
+330
New +$220K ﹤0.01% 2221

Other funds holding BIS

Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
TRCT
Tower Research Capital (TRC) New York $3.85B AUM 32.11% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Jane Street's BIS Position: Q1 2025 in Review

Jane Street sold out of ProShares UltraShort NASDAQ Biotechnology (BIS) in Q1 2025, closing a stake of 19,348 shares — an estimated $704K sold.

Jane Street first reported a position in BIS in Q2 2013 and held it in 15 quarters. The position peaked at $979K in Q4 2018. 4 funds tracked by Wall St. Rank hold BIS as of Q1 2025.

  • Jane Street reported no remaining ProShares UltraShort NASDAQ Biotechnology position as of Q1 2025 after selling out during the quarter.
  • Jane Street sold 19,348 ProShares UltraShort NASDAQ Biotechnology shares in Q1 2025, an estimated $704K.
  • Jane Street first reported a position in ProShares UltraShort NASDAQ Biotechnology in Q2 2013 and held it in 15 quarters.
  • Jane Street's ProShares UltraShort NASDAQ Biotechnology position peaked at $979K in Q4 2018.
  • 4 funds tracked by Wall St. Rank held ProShares UltraShort NASDAQ Biotechnology as of Q1 2025.

Based on Jane Street's 13F filing for Q1 2025, filed 14 May 2025.