Apollo Principal Holdings B GP, LLC is 10% Owner at Diameter Credit Co (NONE). They have made 11 open-market trades across 1 company since 2024, most recently 2026-06-24.
CIK 0002011937
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
11 open-market purchases totalling $225.3M since 2024, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PrivateUnlisted | 32,067,124 | — |
Shares reported on the most recent Form 4, priced at the 2026-06-26 close. 1 holding could not be priced and is excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PrivateApollo Origination II (Levered) Capital Trust | BUY | 2026-06-24 | 2026-06-26 | $26.19 | $40.0M | N/A | N/A | N/A |
| PrivateApollo Origination II (UL) Capital Trust | BUY | 2026-06-24 | 2026-06-26 | $26.16 | $30.0M | N/A | N/A | N/A |
| PrivateApollo Origination II (Levered) Capital Trust | BUY | 2026-03-20 | 2026-03-24 | $25.93 | $65.0M | N/A | N/A | N/A |
| PrivateApollo Origination II (UL) Capital Trust | BUY | 2026-03-20 | 2026-03-24 | $25.86 | $15.0M | N/A | N/A | N/A |
| PrivateApollo Realty Income Solutions, Inc. | BUY | 2025-12-19 | 2025-12-22 | $21.52 | $533K | N/A | N/A | N/A |
| PrivateApollo Realty Income Solutions, Inc. | BUY | 2025-09-19 | 2025-09-22 | $21.49 | $526K | N/A | N/A | N/A |
| PrivateApollo Origination II (UL) Capital Trust | BUY | 2025-08-06 | 2025-08-08 | $26.30 | $30.0M | N/A | N/A | N/A |
| PrivateApollo Realty Income Solutions, Inc. | BUY | 2025-07-22 | 2025-07-23 | $21.40 | $522K | N/A | N/A | N/A |
| PrivateDiameter Credit Co | BUY | 2025-06-09 | 2025-06-11 | $27.55 | $42.0M | N/A | N/A | N/A |
| PrivateApollo Realty Income Solutions, Inc. | BUY | 2025-02-20 | 2025-02-21 | $21.28 | $510K | N/A | N/A | N/A |
| PrivateApollo S3 Private Markets Fund | BUY | 2024-11-21 | 2024-11-25 | $25.04 | $1.2M | N/A | N/A | N/A |