MASSACHUSETTS FINANCIAL SERVICES CO MA
Q2 2026 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
$315.2B Reported Value Total

MFS INVESTMENT MANAGEMENT reports 355 total accounts under management (AUM). There are 311 discretionary accounts valued at $476,823,104,264, and 44 non-discretionary accounts valued at $37,228,073,033.

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
$315.2B
Quarter over quarter
+10.0%
Holdings
997
Top-10 concentration
23.1%

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 2026
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Q2 2026 13F filing summary

Period of report June 30, 2026
Filed August 03, 2026
Form 13F-HR
Reported value $315.2B
Positions 997
Change in reported value +5.9%
New positions 127
Exited positions 76
Position turnover 18.9%
Top-10 concentration 23.1%

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 2026

# Holding Reported value % of portfolio
1 NVDA NVIDIA CORPORATION $13.7B 4.33%
2 GOOGL ALPHABET INC $10.5B 3.34%
3 AAPL APPLE INC $8.9B 2.83%
4 AMZN AMAZON COM INC $8.8B 2.81%
5 MSFT MICROSOFT CORP $8.8B 2.78%
6 AVGO BROADCOM INC $5.5B 1.73%
7 TSM TAIWAN SEMICONDUCTOR MANUFAC $4.7B 1.5%
8 KLAC KLA CORP $4.5B 1.42%
9 JPM JPMORGAN CHASE & CO $4.0B 1.28%
10 LIN LINDE PLC $3.3B 1.03%
11 UBS UBS GROUP AG $3.2B 1.01%
12 CI THE CIGNA GROUP $2.9B 0.92%
13 MA MASTERCARD INCORPORATED $2.8B 0.9%
14 JNJ JOHNSON & JOHNSON $2.7B 0.86%
15 MDT MEDTRONIC PLC $2.6B 0.83%
16 AON AON PLC $2.6B 0.82%
17 V VISA INC $2.5B 0.81%
18 WAT WATERS CORP $2.5B 0.8%
19 STX SEAGATE TECHNOLOGY HLDNGS PL $2.5B 0.8%
20 BDX BECTON DICKINSON & CO $2.5B 0.79%

Values as reported on the Q2 2026 Form 13F. Every position is in the holdings table below.

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