# AFFILIATED MANAGERS GROUP IN (MGRD)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/MGRD/

- Reporting holders: 2
- Reported value: $1.6M
- Shares held by institutions: 0 of 25,859,933 outstanding
- Held through calls: 52.2%
- Held through puts: 47.8%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [IMC-Chicago, LLC](https://holderbook.com/funds/1452861-imc-chicago-llc/) | $1.1M | 0 | 0.0% | 1 |
| [SIMPLEX TRADING, LLC](https://holderbook.com/funds/1488542-simplex-trading-llc/) | $473.8K | 0 | 0.0% | 2 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 2 | $1.6M |
| Q1 2026 | 1 | $332.0K |
| Q3 2025 | 2 | $266.3K |
| Q2 2024 | 2 | $194.1K |
| Q1 2024 | 1 | $191.4K |
| Q4 2023 | 2 | $228.5K |
| Q3 2023 | 2 | $301.7K |
| Q2 2023 | 2 | $537.8K |
| Q1 2023 | 1 | $142.0K |
| Q4 2022 | 1 | $158.0K |
| Q3 2022 | 1 | $268.0K |
| Q2 2022 | 2 | $34.0K |