Based on U.S. Department of Labor Form 5500 filings (plan years 2022–2024), 1 U.S. retirement plans report holding Massachusetts Mutual Life Insurance Company** MassMutual Midcap Growth I in their Schedule of Assets, totaling $22.3M in parsed positions. Matched on the normalized security name across each plan’s latest filing and ranked by position size.
| # | Sponsor / Plan | Location | Participants | Plan assets (EOY) | Position |
|---|---|---|---|---|---|
| 1 | SENIOR OPERATIONS LLC SENIOR OPERATIONS LLC 401(K) PROFIT SHARING INVESTMENT PLAN | BARTLETT IL | 2,267 | $358.7M | $22.3M |
