Ken Griffin
MMS icon

Ken Griffin’s Maximus MMS Stock Holding History

Ken Griffin’s Portfolio MMS Stock Details MMS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$577K Buy
+9,000
New +$731K ﹤0.01% 8956
2025
Q2 		– Sell
-2,100
Closed -$143K – 14097
2025
Q1 		$143K Sell
2,100
-1,800
-46% -$128K ﹤0.01% 10945
2024
Q4 		$291K Sell
3,900
-1,300
-25% -$106K ﹤0.01% 9718
2024
Q3 		$484K Buy
5,200
+3,900
+300% +$349K ﹤0.01% 8328
2024
Q2 		$111K Sell
1,300
-100
-7% -$8.4K ﹤0.01% 10759
2024
Q1 		$117K Buy
1,400
+700
+100% +$57.6K ﹤0.01% 11135
2023
Q4 		$58.7K Sell
700
-200
-22% -$16K ﹤0.01% 11614
2023
Q3 		$67.2K Sell
900
-2,300
-72% -$187K ﹤0.01% 11379
2023
Q2 		$270K Buy
3,200
+1,600
+100% +$132K ﹤0.01% 9261
2023
Q1 		$126K Buy
1,600
+800
+100% +$61.6K ﹤0.01% 10924
2022
Q4 		$58.7K Sell
800
-3,700
-82% -$239K ﹤0.01% 11939
2022
Q3 		$260K Buy
+4,500
New +$281K ﹤0.01% 9879
2022
Q2 		– Sell
-4,400
Closed -$330K – 13640
2022
Q1 		$330K Buy
+4,400
New +$337K ﹤0.01% 10369
2021
Q3 		– Sell
-4,300
Closed -$378K – 14340
2021
Q2 		$378K Buy
+4,300
New +$394K ﹤0.01% 10705
2020
Q4 		– Sell
-5,700
Closed -$390K – 11283
2020
Q3 		$390K Sell
5,700
-10,900
-66% -$802K ﹤0.01% 7709
2020
Q2 		$1.17M Buy
16,600
+3,200
+24% +$215K ﹤0.01% 5547
2020
Q1 		$780K Buy
13,400
+1,400
+12% +$95.1K ﹤0.01% 5744
2019
Q4 		$893K Buy
12,000
+8,900
+287% +$669K ﹤0.01% 5809
2019
Q3 		$240K Buy
+3,100
New +$235K ﹤0.01% 7898
2018
Q4 		– Sell
-7,200
Closed -$468K – 9523
2018
Q3 		$468K Buy
7,200
+100
+1% +$6.49K ﹤0.01% 6807
2018
Q2 		$441K Buy
7,100
+3,300
+87% +$214K ﹤0.01% 6577
2018
Q1 		$254K Buy
+3,800
New +$258K ﹤0.01% 6991
2016
Q3 		– Sell
-4,800
Closed -$266K – 7555
2016
Q2 		$266K Buy
+4,800
New +$259K ﹤0.01% 5399

Other funds holding MMS

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
Mackenzie Financial
Mackenzie Financial Toronto Ontario, Ontario, Canada $83.3B AUM 31.19% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
VBA
Van Berkom & Associates Montreal, Quebec, Canada $3.1B AUM 12.88% 1-Year Est. Return

Ken Griffin's MMS Position: Q1 2026 in Review

Ken Griffin increased its Maximus (MMS) stake by 162% in Q1 2026, buying an estimated $5.03M and bringing the position to 100,102 shares worth $6.42M. The position accounts for ﹤0.01% of the portfolio, ranked #3946.

Ken Griffin first reported a position in MMS in Q2 2013 and has held it in 45 quarters since. The position peaked at $24.4M in Q4 2024. 372 funds tracked by Wall St. Rank hold MMS as of Q1 2026.

  • Ken Griffin held 100,102 shares of Maximus worth $6.42M as of Q1 2026.
  • Ken Griffin bought 61,904 Maximus shares in Q1 2026, an estimated $5.03M.
  • Maximus made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #3946 holding.
  • Ken Griffin first reported a position in Maximus in Q2 2013 and has held it in 45 quarters since.
  • Ken Griffin's Maximus position peaked at $24.4M in Q4 2024.
  • 372 funds tracked by Wall St. Rank held Maximus as of Q1 2026.

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