Ken Griffin
MFSB

Ken Griffin’s MFS Active Core Plus Bond ETF MFSB Stock Holding History

Ken Griffin’s Portfolio MFSB Stock Details MFSB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-59,082
Closed -$1.49M – 14602
2025
Q4 		$1.49M Sell
59,082
-33,030
-36% -$836K ﹤0.01% 6527
2025
Q3 		$2.32M Buy
+92,112
New +$2.31M ﹤0.01% 5763

Other funds holding MFSB

LPL Financial
LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return
WWA
WCG Wealth Advisors Las Vegas, Nevada $3.57B AUM 18.63% 1-Year Est. Return
CWS
Confluence Wealth Services Mcmurray, Pennsylvania $3.5B AUM 22.08% 1-Year Est. Return
MFGM
Marshall Financial Group (Maryland) Hunt Valley, Maryland $686M AUM 24.18% 1-Year Est. Return
ETC
Exchange Traded Concepts Oklahoma City, Oklahoma $21.9B AUM 68.6% 1-Year Est. Return
Jones Financial Companies
Jones Financial Companies Des Peres, Missouri $208B AUM 16.12% 1-Year Est. Return
Cetera Investment Advisers
Cetera Investment Advisers Schaumburg, Illinois $110B AUM 26.29% 1-Year Est. Return
FA
Fermata Advisors Sonoma, California $495M AUM 20.19% 1-Year Est. Return
Raymond James Financial
Raymond James Financial St Petersburg, Florida $324B AUM 22.36% 1-Year Est. Return
Cambridge Investment Research Advisors
Cambridge Investment Research Advisors Fairfield, Iowa $44.6B AUM 28.94% 1-Year Est. Return

Ken Griffin's MFSB Position: Q1 2026 in Review

Ken Griffin sold out of MFS Active Core Plus Bond ETF (MFSB) in Q1 2026, closing a stake of 59,082 shares — an estimated $1.49M sold.

Ken Griffin first reported a position in MFSB in Q3 2025 and held it in 2 quarters. The position peaked at $2.32M in Q3 2025. 33 funds tracked by Wall St. Rank hold MFSB as of Q1 2026.

  • Ken Griffin reported no remaining MFS Active Core Plus Bond ETF position as of Q1 2026 after selling out during the quarter.
  • Ken Griffin sold 59,082 MFS Active Core Plus Bond ETF shares in Q1 2026, an estimated $1.49M.
  • Ken Griffin first reported a position in MFS Active Core Plus Bond ETF in Q3 2025 and held it in 2 quarters.
  • Ken Griffin's MFS Active Core Plus Bond ETF position peaked at $2.32M in Q3 2025.
  • 33 funds tracked by Wall St. Rank held MFS Active Core Plus Bond ETF as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.