MASSACHUSETTS FINANCIAL SERVICES CO MA
Q2 2024 Form 13-F

BOSTON, MASSACHUSETTS
CIK 0000912938 · CRD 110045 · SEC-registered investment adviser
Holdings reported by American Beacon Advisors Inc since Q2 2026
Consolidated report · includes 9 managers since Q2 2013
$325.3B Reported Value Total

MFS INVESTMENT MANAGEMENT reports 344 total accounts under management (AUM). There are 316 discretionary accounts valued at $432,205,800,996, and 28 non-discretionary accounts valued at $22,119,513,668.

Source: Form ADV filed * Note that certain holdings are exempt from Form 13-F reporting, so the AUM totals may be greater than the Form 13-F total.
SEC Registered Discretionary & Non-Discretionary
Private funds (Form ADV)
18 funds · $3.8B gross asset value
Securitized Asset Fund: $2.4B · Other: $926.3M · Hedge Fund: $398.5M
Source: Form ADV filed 2026-03-31
Reported value
$325.3B
Quarter over quarter
+0.3%
Holdings
859
Top-10 concentration
21.8%

Reports holdings for

Holdings reported by

Key People

Form ADV owners & control persons
John Malcolm Corcoran
CHIEF FINANCIAL OFFICER
Heidi Walter Hardin
DIRECTOR, EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL, AND SECRETARY
Melissa Jane Kennedy
DIRECTOR
Q1 2024
Q3 2024
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Q2 2024 13F filing summary

Period of report June 30, 2024
Filed August 09, 2024
Form 13F-HR
Reported value $325.3B
Positions 859
Change in reported value -2.8%
New positions 67
Exited positions 45
Position turnover 12.4%
Top-10 concentration 21.8%

13F filings by quarter

Quarter Positions Value
Q2 2026 13F
Filed Aug 3, 2026
 997 $315.2B
Q1 2026 13F
Filed May 14, 2026
 940 $297.5B
Q4 2025 13F
Filed Jan 22, 2026
 913 $310.1B
Q3 2025 13F
Filed Oct 29, 2025
 854 $322.8B
Q2 2025 13F
Filed Aug 8, 2025
 883 $315.1B
Q1 2025 13F
Filed May 2, 2025
 879 $300.8B
Q4 2024 13F
Filed Feb 12, 2025
 872 $316.9B
Q3 2024 13F
Filed Nov 12, 2024
 844 $334.8B
Q2 2024 13F
Filed Aug 9, 2024
 859 $325.3B
Q1 2024 13F
Filed May 14, 2024
 837 $334.7B
Q4 2023 13F
Filed Feb 8, 2024
 831 $309.6B
Q3 2023 13F
Filed Nov 8, 2023
 833 $285.6B
Q2 2023 13F
Filed Aug 9, 2023
 819 $304.6B
Q1 2023 13F
Filed May 10, 2023
 836 $292.2B
Q4 2022 13F
Filed Feb 13, 2023
 844 $286.5B
Q3 2022 13F
Filed Nov 9, 2022
 847 $267.5B
Q2 2022 13F
Filed Aug 9, 2022
 846 $290.1B
Q1 2022 13F
Filed May 11, 2022
 857 $337.4B
Q4 2021 13F
Filed Feb 10, 2022
 884 $365.3B
Q3 2021 13F
Filed Nov 10, 2021
 903 $341.8B

33 earlier quarters on file — choose one from the quarter menu above.

Top 20 holdings · Q2 2024

# Holding Reported value % of portfolio
1 MSFT MICROSOFT CORP $16.8B 5.16%
2 NVDA NVIDIA CORPORATION $10.2B 3.14%
3 GOOGL ALPHABET INC $8.6B 2.64%
4 AMZN AMAZON COM INC $6.2B 1.89%
5 AAPL APPLE INC $6.1B 1.87%
6 JPM JPMORGAN CHASE & CO. $5.7B 1.74%
7 META META PLATFORMS INC $4.7B 1.44%
8 V VISA INC $4.5B 1.37%
9 TSM TAIWAN SEMICONDUCTOR MFG LTD $4.3B 1.32%
10 LIN LINDE PLC $4.1B 1.26%
11 AON AON PLC $3.7B 1.13%
12 CI THE CIGNA GROUP $3.6B 1.11%
13 ACN ACCENTURE PLC IRELAND $3.3B 1.02%
14 ETN EATON CORP PLC $3.2B 0.99%
15 COP CONOCOPHILLIPS $3.1B 0.95%
16 PGR PROGRESSIVE CORP $3.0B 0.92%
17 ADI ANALOG DEVICES INC $3.0B 0.91%
18 CDNS CADENCE DESIGN SYSTEM INC $2.9B 0.89%
19 UBS UBS GROUP AG $2.9B 0.89%
20 MCK MCKESSON CORP $2.8B 0.86%

Values as reported on the Q2 2024 Form 13F. Every position is in the holdings table below.

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