Based on U.S. Department of Labor Form 5500 filings (plan years 2022–2024), 2 U.S. retirement plans report holding Principal Life Insurance Company Principal Mid-Cap S&P 400 Index SA-R6 in their Schedule of Assets, totaling $355K 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 | OPTICAL CABLE CORPORATION OPTICAL CABLE CORPORATION EMPLOYEES' 401(K) PLAN | ROANOKE VA | 337 | $20.2M | $340K |
| 2 | GRAND CENTRAL INC GRAND CENTRAL, INC. 401(K) RETIREMENT PLAN | DETROIT LAKES MN | 121 | $4.7M | $15K |
