Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in SIM held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | RENAISSANCE TECHNOLOGIES LLC | 207K | $3.2M | -1.0% | 0.125% | 0.00% |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 22K | $662K | +0.5% | 0.013% | 0.00% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 14K | $436K | +0.4% | 0.009% | 0.00% |
| 4 | BlackRock, Inc. | 874 | $26K | 0.0% | 0.001% | 0.00% |
| 5 | EverSource Wealth Advisors, LLC | 63 | $12K | +8.6% | 0.000% | 0.00% |
| 6 | MORGAN STANLEY | 315 | $9K | +173.9% | 0.000% | 0.00% |
| 7 | UBS Group AG | 191 | $6K | +50.4% | 0.000% | 0.00% |
| 8 | ADVISOR GROUP HOLDINGS, INC. | 166 | $5K | 0.0% | 0.000% | 0.00% |
| 9 | SBI Securities Co., Ltd. | 26 | $801 | 0.0% | 0.000% | 0.00% |
| 10 | BNP PARIBAS ARBITRAGE, SA | 25 | $749 | 0.0% | 0.000% | 0.00% |
| 11 | ACADIAN ASSET MANAGEMENT LLC | 1K | $34 | 0.0% | 0.001% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in SIM — a direct measure of their conviction.
Filings activity in SIM during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new SIM position in Q1 2026
No new institutional buyers this quarter.
Institutions that fully closed their SIM position in Q1 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 11 | 15% | 0.09% | 0.05 pp | $4M | 41% |
| Q4 2025 | 13 | +0.0% | 0.14% | +0.00 pp | $7M | +4.9% |
| Q3 2025 | 13 | 13% | 0.14% | +0.01 pp | $7M | +2.5% |
| Q2 2025 | 15 | +15% | 0.13% | +0.00 pp | $7M | +2.6% |
| Q1 2025 | 13 | 7.1% | 0.13% | 0.01 pp | $7M | 7.0% |
| Q4 2024 | 14 | +7.7% | 0.14% | +0.00 pp | $7M | +0.1% |
| Q3 2024 | 13 | +0.0% | 0.14% | 0.02 pp | $7M | 10% |
| Q2 2024 | 13 | — | 0.16% | — | $8M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying SIM stock.
Based on Q1 2026 13F filings, institutional ownership of Grupo Simec, S.A.B. de C.V. stands at 0.1%, held across 11 reporting institutions.
RENAISSANCE TECHNOLOGIES LLC is the largest reported institutional holder of SIM, with approximately 206,824 shares worth $0.00B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of SIM, including RENAISSANCE TECHNOLOGIES LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for SIM is 36 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
0 institutions opened new positions in SIM during Q1 2026, while 2 fully exited. 8 added to existing positions and 3 trimmed.
SIM institutional ownership fell by 0.05 percentage points quarter-over-quarter, with a net change of -2 holders.
The top 10 institutions account for 100.0% of all reported 13F value in SIM, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Grupo Simec, S.A.B. de C.V. (SIM) Institutional Ownership