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MMID

MFS Active Mid Cap ETF
MMID

1 hedge funds and large institutions have $544K invested in MFS Active Mid Cap ETF in 2025 Q3 according to their latest regulatory filings, with 1 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1
Holders Change
+1
Holders Change %
–
% of All Funds
0.01%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
1
Increased
–
Reduced
–
Closed
–
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Jane Street
Jane Street
New York
+$539K

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
Jane Street
1
Jane Street
New York
$544K +$539K +21,665 New

MMID Hedge Fund Activity: Q3 2025 in Review

1 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in MFS Active Mid Cap ETF (MMID) for Q3 2025, worth a combined $544K.

Buyers outnumbered sellers: 1 fund opened new MMID positions and 0 closed out — a net gain of 1 holder — while 0 added to existing stakes and 0 trimmed.

The largest buyer was Jane Street, opening a new position worth an estimated $539K.

  • 1 institutional investor held MFS Active Mid Cap ETF (MMID) as of Q3 2025, up from 0 in Q2 2025.
  • Funds reported $544K of MFS Active Mid Cap ETF stock for Q3 2025.
  • 1 fund opened new MFS Active Mid Cap ETF positions in Q3 2025 and 0 closed out, a net change of +1 holder.
  • The largest MFS Active Mid Cap ETF buyer in Q3 2025 was Jane Street, an estimated $539K added.

Based on aggregated 13F filings for Q3 2025.