Jane Street’s iShares Defense Industrials 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
$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

Jane Street's IDEF Position: Q2 2026 in Review

Jane Street increased its iShares Defense Industrials Active ETF (IDEF) stake by 1,089% in Q2 2026, buying an estimated $15.4M and bringing the position to 509,972 shares worth $16.2M. The position accounts for ﹤0.01% of the portfolio, ranked #2345.

Jane Street first reported a position in IDEF in Q3 2025 and has held it in 4 quarters since. 266 funds tracked by Wall St. Rank hold IDEF as of Q2 2026.

  • Jane Street held 509,972 shares of iShares Defense Industrials Active ETF worth $16.2M as of Q2 2026.
  • Jane Street bought 467,066 iShares Defense Industrials Active ETF shares in Q2 2026, an estimated $15.4M.
  • iShares Defense Industrials Active ETF made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #2345 holding.
  • Jane Street first reported a position in iShares Defense Industrials Active ETF in Q3 2025 and has held it in 4 quarters since.
  • 266 funds tracked by Wall St. Rank held iShares Defense Industrials Active ETF as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.