Jane Street’s iShares Biotechnology ETF IBB Stock Holding History

Jane Street’s Portfolio IBB Stock Details IBB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$13.5M	Buy	80,200 +20,000	+33%	+$3.42M	﹤0.01%	2170
2025 Q4	$10.2M	Buy	60,200 +7,800	+15%	+$1.27M	﹤0.01%	2301
2025 Q3	$7.56M	Sell	52,400 -40,700	-44%	-$5.56M	﹤0.01%	2804
2025 Q2	$11.8M	Buy	93,100 +36,600	+65%	+$4.49M	﹤0.01%	1956
2025 Q1	$7.23M	Buy	56,500 +20,200	+56%	+$2.74M	﹤0.01%	2403
2024 Q4	$4.8M	Sell	36,300 -97,300	-73%	-$13.7M	﹤0.01%	2710
2024 Q3	$19.5M	Buy	+133,600	New	+$19.3M	﹤0.01%	1261
2022 Q2	–	Sell	-173,300	Closed	-$22.6M	–	10151
2022 Q1	$22.6M	Sell	173,300 -64,500	-27%	-$8.4M	0.01%	1164
2021 Q4	$36.3M	Sell	237,800 -63,500	-21%	-$9.83M	0.01%	809
2021 Q3	$48.7M	Buy	301,300 +67,200	+29%	+$11.3M	0.02%	612
2021 Q2	$38.3M	Buy	234,100 +112,100	+92%	+$17.3M	0.02%	678
2021 Q1	$18.4M	Sell	122,000 -453,800	-79%	-$72.1M	0.01%	1049
2020 Q4	$87.2M	Buy	575,800 +166,400	+41%	+$23.8M	0.04%	283
2020 Q3	$55.4M	Buy	409,400 +176,900	+76%	+$24M	0.03%	356
2020 Q2	$31.8M	Buy	232,500 +60,400	+35%	+$7.7M	0.02%	530
2020 Q1	$18.5M	Sell	172,100 -31,800	-16%	-$3.66M	0.02%	493
2019 Q4	$24.6M	Sell	203,900 -29,400	-13%	-$3.28M	0.03%	326
2019 Q3	$23.2M	Buy	233,300 +118,600	+103%	+$12.4M	0.04%	323
2019 Q2	$12.5M	Buy	114,700 +37,000	+48%	+$3.94M	0.02%	536
2019 Q1	$8.69M	Sell	77,700 -174,300	-69%	-$19.1M	0.01%	773
2018 Q4	$24.3M	Sell	252,000 -50,100	-17%	-$5.32M	0.05%	260
2018 Q3	$36.8M	Buy	302,100 +142,100	+89%	+$16.7M	0.07%	190
2018 Q2	$17.6M	Buy	160,000 +36,500	+30%	+$3.9M	0.04%	353
2018 Q1	$13.2M	Sell	123,500 -234,500	-66%	-$26M	0.03%	437
2017 Q4	$38.2M	Sell	358,000 -256,700	-42%	-$27.4M	0.11%	161
2017 Q3	$68.4M	Sell	614,700 -157,800	-20%	-$16.9M	0.22%	81
2017 Q2	$79.8M	Buy	772,500 +632,700	+453%	+$62.3M	0.28%	64
2017 Q1	$13.7M	Sell	139,800 -147,300	-51%	-$14.1M	0.06%	283
2016 Q4	$25.4M	Sell	287,100 -198,000	-41%	-$18M	0.11%	150
2016 Q3	$46.8M	Sell	485,100 -459,900	-49%	-$43.8M	0.22%	80
2016 Q2	$81.1M	Buy	945,000 +26,400	+3%	+$2.37M	0.4%	41
2016 Q1	$79.9M	Sell	918,600 -717,600	-44%	-$64.2M	0.45%	33
2015 Q4	$185M	Sell	1,636,200 -57,300	-3%	-$6.22M	1.15%	8
2015 Q3	$171M	Buy	1,693,500 +1,062,300	+168%	+$127M	1.07%	12
2015 Q2	$77.6M	Buy	631,200 +58,200	+10%	+$6.97M	0.5%	28
2015 Q1	$65.6M	Sell	573,000 -107,700	-16%	-$11.9M	0.51%	29
2014 Q4	$68.8M	Sell	680,700 -387,000	-36%	-$37.6M	0.52%	29
2014 Q3	$97.4M	Buy	1,067,700 +256,200	+32%	+$22.5M	0.99%	16
2014 Q2	$69.5M	Sell	811,500 -642,000	-44%	-$50.6M	0.88%	15
2014 Q1	$115M	Buy	1,453,500 +1,313,100	+935%	+$109M	1.27%	10
2013 Q4	$10.6M	Buy	+140,400	New	+$9.96M	0.15%	114

Other funds holding IBB

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Citigroup New York $235B AUM 32.99% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

BNP Paribas Financial Markets Paris, France $206B AUM 31.61% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Envestnet Asset Management Chicago, Illinois $374B AUM 17.66% 1-Year Est. Return

Raymond James Financial St Petersburg, Florida $324B AUM 22.36% 1-Year Est. Return

Commerce Bank Kansas City, Missouri $20.7B AUM 23.76% 1-Year Est. Return

Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return

Jane Street's IBB Position: Q1 2026 in Review

Jane Street reduced its iShares Biotechnology ETF (IBB) stake by 98% in Q1 2026, selling an estimated $19.3M and leaving 1,907 shares worth $322K. The position accounts for ﹤0.01% of the portfolio, ranked #9087.

Jane Street first reported a position in IBB in Q2 2013 and has held it in 47 quarters since. The position peaked at $258M in Q4 2024. 917 funds tracked by Wall St. Rank hold IBB as of Q1 2026.

Jane Street held 1,907 shares of iShares Biotechnology ETF worth $322K as of Q1 2026.
Jane Street sold 112,844 iShares Biotechnology ETF shares in Q1 2026, an estimated $19.3M.
iShares Biotechnology ETF made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #9087 holding.
Jane Street first reported a position in iShares Biotechnology ETF in Q2 2013 and has held it in 47 quarters since.
Jane Street's iShares Biotechnology ETF position peaked at $258M in Q4 2024.
917 funds tracked by Wall St. Rank held iShares Biotechnology ETF as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.