DOSSIER · 13F Holders · Q2 2026
MIEIX

MFS SERIES TRUST XVII

2 institutions still hold MFS SERIES TRUST XVII as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 552966806·2 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$26M
visible holders
Holders
2
filers reporting
Concentration
99.98%
Arvest Bank Trust Division #1
top holder share
AI Holders Summary · Q2 2026

2 institutions reported MIEIX in Q2 2026. Arvest Bank Trust Division leads at 100.0% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Arvest Bank Trust Division
CIK 0001625959
$26M609K1.24%Q2 2026
02
Vermillion Wealth Management, Inc.
CIK 0001737012
$4K960.00%Q2 2026