Jeff Yass’s BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF IDEF Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$24.7M Buy
776,896
+698,084
+886% +$23.1M ﹤0.01% 2228
2026
Q1
$2.58M Buy
78,812
+66,312
+530% +$2.31M ﹤0.01% 5602
2025
Q4
$385K Sell
12,500
-15,129
-55% -$468K ﹤0.01% 9392
2025
Q3
$878K Buy
+27,629
New +$809K ﹤0.01% 7651

Other funds holding IDEF

Jeff Yass's IDEF Position: Q2 2026 in Review

Jeff Yass increased its BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF (IDEF) stake by 886% in Q2 2026, buying an estimated $23.1M and bringing the position to 776,896 shares worth $24.7M. The position accounts for ﹤0.01% of the portfolio, ranked #2228.

Jeff Yass first reported a position in IDEF in Q3 2025 and has held it in 4 quarters since. 280 funds tracked by Wall St. Rank hold IDEF as of Q2 2026.

  • Jeff Yass held 776,896 shares of BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF worth $24.7M as of Q2 2026.
  • Jeff Yass bought 698,084 BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF shares in Q2 2026, an estimated $23.1M.
  • BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #2228 holding.
  • Jeff Yass first reported a position in BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF in Q3 2025 and has held it in 4 quarters since.
  • 280 funds tracked by Wall St. Rank held BlackRock ETF Trust iShares Defense Industrials and Tech Active ETF as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.