Apartment Investment and Management Company
A real estate investment trust that owns, develops and manages apartment communities across the United States, with a focus on markets like South Florida, Denver and the Washington, D.C. area. Known simply as Aimco — a nickname that spells out its full name, Apartment Investment and Management Company — it grew out of The Considine Company, founded by real estate investor Terry Considine in 1975, and went public in 1994. Fun fact: the name Aimco is just a tidy acronym for what the firm literally is.
Class A Common Stock
| Holder | Schedule | % of class | Shares | Filed |
|---|---|---|---|---|
| Vanguard Portfolio Management | 13G/APassive | 4.08% | 5.88M | Jul 31, 2026 |
| Weiss Asset Management LP | 13GPassive | 5.7% | 8.15M | May 11, 2026 |
| WAM GP LLC | 13GPassive | 5.7% | 8.15M | May 11, 2026 |
| WEISS ANDREW M | 13GPassive | 5.7% | 8.15M | May 11, 2026 |
| BlackRock, Inc. | 13G/APassive | 0.4% | 570.9K | Apr 27, 2026 |
| The Vanguard Group | 13G/APassive | 0% | 0 | Mar 26, 2026 |
| Newtyn Management, LLC | 13G/APassive | 8.1% | 11.60M | Mar 25, 2026 |
| Newtyn TE Partners, LP | 13G/APassive | 5% | 7.24M | Mar 25, 2026 |
| Madison Avenue International LP | 13GPassive | 8.6% | 12.35M | Mar 4, 2026 |
| Madison Avenue Partners, LP | 13GPassive | 8.6% | 12.35M | Mar 4, 2026 |