OpenStocks
Smart money
  • Super investors
  • Best performance
  • Growth investors
  • Value investors
  • Short sellers
  • Long-term investors
  • Most popular stocks
  • Biggest buys
  • Biggest sells
  • New positions
  • Smart-money signals
Insiders
  • Insider trading
  • Browse insiders
  • Transactions feed
  • Insider trading RSS
Congress
  • Congress stock trades
  • All members of Congress
  • Trades by committee
  • Congress trades RSS
Markets
  • ETFs
  • Sectors
  • Industries
  • Stock screener
  • Daily market digest
  • Blog
Built from publicly disclosed institutional and insider activity. Informational purposes only - not investment advice.OpenStocks · v0.1
Logos by elbstream.com
  1. Home/
  2. ETFs/
  3. CMU
ETF · 59318E102

CMU

CEF
MFS HIGH YIELD MUN TR
← All ETFs
Sign in to saveShare
Holders (tracked)
1
Combined shares
18,396
Combined value
$64.6K
Last close
$3.65
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 7 quarters.
112018Q42025Q4
Filing-implied avg cost: $3.51 · live $3.65

Who owns CMU

1 super-investors · 2025Q4
Tracked stake
18.4K
shares
Combined value
$65K
% of shares outstanding
—
shares-out unknown
Quarter action mix
Trim1
#ManagerSharesValue% of bookLast action8Q trend
1Ken Griffin
Citadel Advisors
18.4K$65K0.0%
Trim−10.8K

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to0
—
Trimmed1
  • Ken Griffin (Citadel Advisors)
    −10,765
    $38K
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersSharesCombined valueΔ holders
2018Q4
1
50,500
$211K
—
2024Q1
1
11,462
$38K
—
2024Q2
1
21,118
$72K
—
2024Q3
1
10,434
$38K
—
2025Q2
1
21,192
$71K
—
2025Q3
1
29,161
$101K
—
2025Q4
1
18,396
$65K
—