Jane Street’s BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF IDEF Stock Holding History

Jane Street’s Portfolio IDEF Stock Details IDEF Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q3	$2.05M	Sell	65,591 -444,381	-87%	-$14.5M	﹤0.01%	5106
2026 Q2	$16.2M	Buy	509,972 +467,066	+1,089%	+$15.4M	﹤0.01%	2345
2026 Q1	$1.4M	Buy	42,906 +30,081	+235%	+$1.05M	﹤0.01%	5767
2025 Q4	$395K	Sell	12,825 -2,174	-14%	-$67.3K	﹤0.01%	8214
2025 Q3	$477K	Buy	+14,999	New	+$439K	﹤0.01%	7972

Other funds holding IDEF

LPL Financial San Diego, California $468B AUM 17.69% 1-Year Est. Return

Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return

Park Avenue Securities New York $16.4B AUM 18.52% 1-Year Est. Return

Cetera Investment Advisers Schaumburg, Illinois $115B AUM 18.52% 1-Year Est. Return

JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return

Foundations Investment Advisors Phoenix, Arizona $10.1B AUM 19.55% 1-Year Est. Return

MML Investors Services Springfield, Massachusetts $32.8B AUM 18.62% 1-Year Est. Return

Janney Montgomery Scott Philadelphia, Pennsylvania $52.3B AUM 19.7% 1-Year Est. Return

Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return

JB Capital Wethersfield, Connecticut $2.93B AUM 20.02% 1-Year Est. Return

Jane Street's IDEF Position: Q3 2026 in Review

Jane Street reduced its BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF (IDEF) stake by 87% in Q3 2026, selling an estimated $14.5M and leaving 65,591 shares worth $2.05M. The position accounts for ﹤0.01% of the portfolio, ranked #5106.

Jane Street first reported a position in IDEF in Q3 2025 and has held it in 5 quarters since. The position peaked at $16.2M in Q2 2026. 268 funds tracked by Wall St. Rank hold IDEF as of Q3 2026.

Jane Street held 65,591 shares of BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF worth $2.05M as of Q3 2026.
Jane Street sold 444,381 BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF shares in Q3 2026, an estimated $14.5M.
BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF made up ﹤0.01% of Jane Street's portfolio in Q3 2026, its #5106 holding.
Jane Street first reported a position in BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF in Q3 2025 and has held it in 5 quarters since.
Jane Street's BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF position peaked at $16.2M in Q2 2026.
268 funds tracked by Wall St. Rank held BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF as of Q3 2026.

Based on Jane Street's 13F filing for Q3 2026, filed 12 Nov 2026.