# Rush Island Management, LP

> Rush Island Management, LP is an SEC-registered investment advisory firm in New York, NY, registered since 2018, reporting $1 billion to $5 billion in regulatory assets under management in its Form ADV filing dated March 27, 2026.

- CRD: 291275
- Filed as: RUSH ISLAND MANAGEMENT, LP
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: New York, NY
- Filing period: October 2026
- Form ADV filing dated: March 27, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/291275
- AdvisorCensus page: https://advisorcensus.com/firm/rush-island-management-lp-new-york-ny-291275

## Quick answers

**How is Rush Island Management, LP compensated?**
On its Form ADV (Item 5.E, October 2026), Rush Island Management, LP reports these compensation arrangements: a percentage of assets under its management; performance-based fees. The amounts are in Item 5 of its Form ADV Part 2A brochure.

**Where is Rush Island Management, LP located?**
Rush Island Management, LP's principal office is in New York, NY, according to its Form ADV.

**Is Rush Island Management, LP registered with the SEC or a state?**
Rush Island Management, LP is an SEC-registered investment advisory firm, registered since 2018. Status as filed: Approved. CRD 291275.

**How much does Rush Island Management, LP manage?**
Rush Island Management, LP reports $2,018,851,000 in regulatory assets under management in its Form ADV filing dated March 27, 2026 (100% discretionary).

**How have Rush Island Management, LP's assets and staff changed since 2021?**
In the Form ADV data for Rush Island Management, LP: Regulatory assets under management: $328,603,671 in the October 2021 data and $2,018,851,000 in the October 2026 data, up 514%. Total employees: 6 in October 2021 and 7 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Rush Island Management, LP serve?**
By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (4).

**Which custodians does Rush Island Management, LP use?**
Rush Island Management, LP's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Goldman Sachs & Co. LLC and Morgan Stanley & Co. LLC as custodians holding 10% or more of its separately managed account assets.

**Does Rush Island Management, LP report any disciplinary disclosures?**
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/291275

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Performance-based fees

### Custodians (Schedule D, Section 5.K(3))
- Goldman Sachs & Co. LLC
- Morgan Stanley & Co. LLC

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

### Regulatory assets under management (Item 5.F)
- Total: $2,018,851,000
- Discretionary: $2,018,851,000
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Pooled investment vehicles (other than investment companies and business development companies) | 4 | $1,557,511,000 |
| Charitable organizations | Fewer than 5 | $461,340,000 |

### Advisory services (Item 5.G)
- Portfolio management for pooled investment vehicles (other than investment companies)

### Firm details
- Registered since: 2018 (8 years)
- Employees: 7 total, 5 performing advisory functions
- Wrap fee program participation: No
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Websites listed on Form ADV (Item 1.I)
- [rushisland.com](https://rushisland.com)
- LinkedIn @rush-island-management

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $328,603,671 | 6 | March 25, 2021 |
| October 2022 | $751,009,000 | 6 | March 25, 2022 |
| October 2023 | $954,121,000 | 7 | March 30, 2023 |
| October 2024 | $1,966,670,000 | 7 | July 18, 2024 |
| October 2025 | $2,043,803,000 | 7 | March 25, 2025 |
| October 2026 | $2,018,851,000 | 7 | March 27, 2026 |

Regulatory assets under management: $328,603,671 in the October 2021 data and $2,018,851,000 in the October 2026 data, up 514%.
Total employees: 6 in October 2021 and 7 in October 2026.

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Rush Island Management, LP (CRD 291275): Form ADV filing data as of October 2026.