MFSB
MFS Active Exchange Traded Funds Trust - MFS Active Core Plus Bond ETF
Stock · Financial Services · Asset Management · US · $539M market cap
Held by ETFs$24M
Share of the company≈4%
Top-10 holding in1 ETFs
Built on MFSB alone0 ETFs
Most per dollar · basket—
Biggest holderBLUI $24M
Every ETF built around MFSB
Closest to the stock first, then outward.
Map · size = assets, color = YTDFundNameWhat it gives youMFSB per $1,000YTDYieldFeeAssets
4Heaviest basketsMFSB is the biggest slice; over $1B first1 fund hold it in their top 10
Where the ETF money in MFSB sits
Income $24M
The ETF Tracker@TheETFTrackerTile size = dollars of MFSB held · $24M across funds that list it in their top 10
The ETF TrackerWhere the ETF money in MFSB sits@TheETFTracker · etftracker.io · Nov 1, 2026