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iShares MSCI USA Size Factor ETF

67 hedge funds and large institutions have $301M invested in iShares MSCI USA Size Factor ETF in 2025 Q3 according to their latest regulatory filings, with 5 funds opening new positions, 19 increasing their positions, 25 reducing their positions, and 5 closing their positions.

New
Increased
Maintained
Reduced
Closed

8% more capital invested

Capital invested by funds: $277M → $301M (+$23.2M)

0% more funds holding

Funds holding: 6767 (0)

0% more funds holding in top 10

Funds holding in top 10: 22 (0)

0% more first-time investments, than exits

New positions opened: 5 | Existing positions closed: 5

0.31% less ownership

Funds ownership: 81.62%81.31% (-0.31%)

24% less repeat investments, than reductions

Existing positions increased: 19 | Existing positions reduced: 25

Holders
67
Holders Change
Holders Change %
0%
% of All Funds
0.88%
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.03%
New
5
Increased
19
Reduced
25
Closed
5
Calls
Puts
Net Calls
Net Calls Change

SIZE Hedge Fund Activity: Q3 2025 in Review

67 of the 7,640 institutional investors tracked by Wall St. Rank reported a position in iShares MSCI USA Size Factor ETF (SIZE) for Q3 2025, worth a combined $301M — up 8.4% from $277M a quarter earlier.

Fund positioning in SIZE was balanced in Q3 2025: 5 funds opened new positions, 5 closed out, 19 added to existing stakes and 25 trimmed.

The largest buyer was Lido Advisors, adding an estimated $15M. The largest seller was Susquehanna International Group, cutting an estimated $4.31M.

  • 67 institutional investors held iShares MSCI USA Size Factor ETF (SIZE) as of Q3 2025, unchanged from Q2 2025.
  • Funds reported $301M of iShares MSCI USA Size Factor ETF stock for Q3 2025, up 8.4% quarter-over-quarter.
  • 5 funds opened new iShares MSCI USA Size Factor ETF positions in Q3 2025 and 5 closed out, a net change of 0 holders.
  • The largest iShares MSCI USA Size Factor ETF buyer in Q3 2025 was Lido Advisors, an estimated $15M added.
  • The largest iShares MSCI USA Size Factor ETF seller in Q3 2025 was Susquehanna International Group, an estimated $4.31M sold.

Based on aggregated 13F filings for Q3 2025.