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Institutional 13F data

Massachusetts Financial Services Co 13F

See 939 stock and ETF positions for Q1 2026, including 357 new or increased positions and 605 reductions or exits, with the original SEC filing. Put and call options are excluded.

13F filing follow-along calculator

If KRW 1,000,000 followed the new and increased positions

Checking current prices and calculating the KRW 1,000,000 result.

Latest 13F filing snapshot

Reporting period
2026-03-31
Filed
2026-05-14
Stock & ETF positions
939
New or increased
357
Reduced or exited
605
Unchanged
40

Top reported buys

MUSIMOAMDSTX

Counts cover unique stock and ETF positions and exclude put and call options, so they can differ from the SEC information-table row count. Form 13F reports quarter-end holdings and does not reveal every trade date or execution price.

View original SEC filings

Detailed changes for published stocks

2026-03-31 · D · decreased -4.8%

Shares
26,621,442
Share change
-1,342,258
Reported value
$1,640,546,066
Filed
2026-05-14
DSEC EDGAR ↗

2026-03-31 · EQH · decreased -17.2%

Shares
3,991,113
Share change
-829,072
Reported value
$148,937,509
Filed
2026-05-14
EQHSEC EDGAR ↗

2026-03-31 · IFF · decreased -3.0%

Shares
3,066,939
Share change
-94,854
Reported value
$243,579,131
Filed
2026-05-14
IFFSEC EDGAR ↗

2026-03-31 · KKR · decreased -23.1%

Shares
14,350,033
Share change
-4,310,608
Reported value
$1,329,258,789
Filed
2026-05-14
KKRSEC EDGAR ↗

2026-03-31 · TD · decreased -6.5%

Shares
14,219,093
Share change
-988,493
Reported value
$1,447,463,092
Filed
2026-05-14
TDSEC EDGAR ↗

2026-03-31 · TSM · decreased -4.6%

Shares
9,677,855
Share change
-466,647
Reported value
$3,403,107,389
Filed
2026-05-14
TSMSEC EDGAR ↗

2026-03-31 · VC · decreased -12.3%

Shares
539,137
Share change
-75,614
Reported value
$49,120,772
Filed
2026-05-14
VCSEC EDGAR ↗

2026-03-31 · WGS · increased +80.5%

Shares
358,978
Share change
160,098
Reported value
$23,053,567
Filed
2026-05-14
WGSSEC EDGAR ↗
Massachusetts Financial Services Co 13F Holdings (Q1 2026) | WhenBuy