MFS Active Mid Cap ETF
MMID
1 hedge funds and large institutions have $211K invested in MFS Active Mid Cap ETF in 2025 Q4 according to their latest regulatory filings, with 0 funds opening new positions, increasing their positions, 1 reducing their positions, and closing their positions.
0.65% more ownership
Funds ownership: 0% → 0.65% (+0.65%)
0% more funds holding
Funds holding: 1 → 1 (0)
61% less capital invested
Capital invested by funds: $544K → $211K (-$333K)
100% less repeat investments, than reductions
Existing positions increased: 0 | Existing positions reduced: 1
Top Buyers
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
-$331K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
1
Jane Street
New York
| $211K | -$331K | -13,266 | -61% |
|
MMID Hedge Fund Activity: Q4 2025 in Review
1 of the 8,228 institutional investors tracked by Wall St. Rank reported a position in MFS Active Mid Cap ETF (MMID) for Q4 2025, worth a combined $211K — down 61% from $544K a quarter earlier.
Fund positioning in MMID was balanced in Q4 2025: 0 funds opened new positions, 0 closed out, 0 added to existing stakes and 1 trimmed.
The largest seller was Jane Street, cutting an estimated $331K.
- 1 institutional investor held MFS Active Mid Cap ETF (MMID) as of Q4 2025, unchanged from Q3 2025.
- Funds reported $211K of MFS Active Mid Cap ETF stock for Q4 2025, down 61% quarter-over-quarter.
- 0 funds opened new MFS Active Mid Cap ETF positions in Q4 2025 and 0 closed out.
- The largest MFS Active Mid Cap ETF seller in Q4 2025 was Jane Street, an estimated $331K sold.
Based on aggregated 13F filings for Q4 2025.