# SIMPSON MFG INC (SSD) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 829073105
Page URL: https://superinvestorclub.com/stock/SSD
Last updated: 2026-07-08T12:46:50.709Z

## Summary

As of the most recent 13F filing period, SIMPSON MFG INC (SSD) is held by 2 tracked superinvestors with an aggregate position value of $255.7M representing 0139804291750 shares.

## Top institutional holders (2)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Mason Morfit](https://superinvestorclub.com/manager/50) | ValueAct Capital | 1398042 | $239.9M | 4.20% | 2026-03-31 |
| 2 | [John Rogers](https://superinvestorclub.com/manager/76) | Ariel Investments | 91750 | $15.7M | 0.18% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2024-03-31: 1 holders, $16.4M aggregate, 079873 shares
- 2024-06-30: 2 holders, $40.5M aggregate, 015742083004 shares
- 2024-09-30: 2 holders, $30.9M aggregate, 011029151496 shares
- 2024-12-31: 2 holders, $26.1M aggregate, 010782849776 shares
- 2025-03-31: 1 holders, $17.5M aggregate, 0111496 shares
- 2025-06-30: 2 holders, $235.3M aggregate, 01406105108613 shares
- 2025-09-30: 2 holders, $217.8M aggregate, 0120794292850 shares
- 2025-12-31: 2 holders, $252.5M aggregate, 0147214291389 shares
- 2026-03-31: 2 holders, $255.7M aggregate, 0139804291750 shares

## Recent congressional trades (4)

- 2025-11-19: Michael McCaul (Republican-TX) sale $50,001 - $100,000
- 2025-10-09: Michael McCaul (Republican-TX) sale $15,001 - $50,000
- 2025-08-21: Michael McCaul (Republican-TX) sale $1,001 - $15,000
- 2025-04-11: Michael McCaul (Republican-TX) purchase $15,001 - $50,000

## Recent insider transactions (0)


## Citation

When citing, use: "SIMPSON MFG INC (SSD) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/SSD), aggregating SEC 13F, Form 4, and congressional disclosures."