Twin Tree Management’s iShares Biotechnology ETF IBB Stock Holding History

Twin Tree Management’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
2025 Q4	–	Sell	-33,400	Closed	-$4.82M	–	1562
2025 Q3	$4.82M	Sell	33,400 -281,200	-89%	-$38.4M	0.02%	763
2025 Q2	$39.8M	Buy	+314,600	New	+$38.6M	0.07%	266
2025 Q1	–	Sell	-109,300	Closed	-$14.5M	–	1715
2024 Q4	$14.5M	Buy	+109,300	New	+$15.4M	0.03%	566
2024 Q3	–	Sell	-28,700	Closed	-$3.94M	–	1630
2024 Q2	$3.94M	Hold	28,700	–	–	0.01%	822
2024 Q1	$3.94M	Buy	+28,700	New	+$3.92M	0.01%	871
2021 Q4	–	Sell	-360,100	Closed	-$58.2M	–	1694
2021 Q3	$58.2M	Buy	+360,100	New	+$60.6M	0.13%	146
2020 Q4	–	Sell	-45,600	Closed	-$6.17M	–	1373
2020 Q3	$6.17M	Buy	+45,600	New	+$6.19M	0.03%	522
2018 Q4	–	Sell	-16,000	Closed	-$1.95M	–	1410
2018 Q3	$1.95M	Buy	+16,000	New	+$1.88M	0.01%	595
2018 Q1	–	Sell	-9,300	Closed	-$993K	–	1191
2017 Q4	$993K	Sell	9,300 -162,000	-95%	-$17.3M	0.01%	702
2017 Q3	$19M	Hold	171,300	–	–	0.15%	136
2017 Q2	$17.7M	Buy	171,300 +131,700	+333%	+$13M	0.14%	148
2017 Q1	$3.87M	Buy	39,600 +36,900	+1,367%	+$3.53M	0.04%	398
2016 Q4	$239K	Buy	+2,700	New	+$246K	﹤0.01%	970

Other funds holding IBB

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Citigroup New York $303B AUM 53.02% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

BNP Paribas Financial Markets Paris, France $289B AUM 60.46% 1-Year Est. Return

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Envestnet Asset Management Chicago, Illinois $424B AUM 22.96% 1-Year Est. Return

Raymond James Financial St Petersburg, Florida $369B AUM 28.27% 1-Year Est. Return

Wells Fargo San Francisco, California $617B AUM 30.33% 1-Year Est. Return

Commerce Bank Kansas City, Missouri $22.8B AUM 28.56% 1-Year Est. Return

Twin Tree Management's IBB Position: Q2 2026 in Review

Twin Tree Management increased its iShares Biotechnology ETF (IBB) stake by 350% in Q2 2026, buying an estimated $1.55M and bringing the position to 11,620 shares worth $2.21M. The position accounts for 0.04% of the portfolio, ranked #533.

Twin Tree Management first reported a position in IBB in Q4 2016 and has held it in 16 quarters since. The position peaked at $52.3M in Q2 2021. 956 funds tracked by Wall St. Rank hold IBB as of Q2 2026.

Twin Tree Management held 11,620 shares of iShares Biotechnology ETF worth $2.21M as of Q2 2026.
Twin Tree Management bought 9,036 iShares Biotechnology ETF shares in Q2 2026, an estimated $1.55M.
iShares Biotechnology ETF made up 0.04% of Twin Tree Management's portfolio in Q2 2026, its #533 holding.
Twin Tree Management first reported a position in iShares Biotechnology ETF in Q4 2016 and has held it in 16 quarters since.
Twin Tree Management's iShares Biotechnology ETF position peaked at $52.3M in Q2 2021.
956 funds tracked by Wall St. Rank held iShares Biotechnology ETF as of Q2 2026.

Based on Twin Tree Management's 13F filing for Q2 2026, filed 12 Aug 2026.