# Arclight Capital Partners, LLC

> Arclight Capital Partners, LLC is an SEC-registered investment advisory firm in Boston, MA, registered since 2012, reporting over $5 billion in regulatory assets under management in its Form ADV filing dated July 1, 2026.

- CRD: 161228
- Filed as: ARCLIGHT CAPITAL PARTNERS, LLC
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: Boston, MA
- Filing period: October 2026
- Form ADV filing dated: July 1, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/161228
- AdvisorCensus page: https://advisorcensus.com/firm/arclight-capital-partners-llc-boston-ma-161228

## Quick answers

**How is Arclight Capital Partners, LLC compensated?**
On its Form ADV (Item 5.E, October 2026), Arclight Capital Partners, LLC reports these compensation arrangements: a percentage of assets under its management; other. The amounts are in Item 5 of its Form ADV Part 2A brochure.

**Where is Arclight Capital Partners, LLC located?**
Arclight Capital Partners, LLC's principal office is in Boston, MA, according to its Form ADV.

**Is Arclight Capital Partners, LLC registered with the SEC or a state?**
Arclight Capital Partners, LLC is an SEC-registered investment advisory firm, registered since 2012. Status as filed: Approved. CRD 161228.

**How much does Arclight Capital Partners, LLC manage?**
Arclight Capital Partners, LLC reports $13,544,705,540 in regulatory assets under management in its Form ADV filing dated July 1, 2026 (100% discretionary).

**How have Arclight Capital Partners, LLC's assets and staff changed since 2021?**
In the Form ADV data for Arclight Capital Partners, LLC: Regulatory assets under management: $9,577,254,641 in the October 2021 data and $13,544,705,540 in the October 2026 data, up 41%. Total employees: 43 in October 2021 and 60 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Arclight Capital Partners, LLC serve?**
By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (22).

**Does Arclight Capital Partners, LLC 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/161228

**What changed in Arclight Capital Partners, LLC's recent Form ADV filings?**
In the August 2026 filing data: Updated its list of owners and control persons (Schedule A).

## From the Form ADV filing

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

### Regulatory assets under management (Item 5.F)
- Total: $13,544,705,540
- Discretionary: $13,544,705,540
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Pooled investment vehicles (other than investment companies and business development companies) | 22 | $13,544,705,540 |

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

### Firm details
- Registered since: 2012 (14 years)
- Employees: 60 total, 31 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: MA
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Websites listed on Form ADV (Item 1.I)
- arclight.com
- LinkedIn @arclight-capital-partners

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $9,577,254,641 | 43 | April 30, 2021 |
| October 2022 | $9,599,320,629 | 46 | April 13, 2022 |
| October 2023 | $9,860,537,983 | 54 | March 31, 2023 |
| October 2024 | $8,039,616,199 | 56 | March 29, 2024 |
| October 2025 | $9,485,124,882 | 52 | March 21, 2025 |
| October 2026 | $13,544,705,540 | 60 | July 1, 2026 |

Regulatory assets under management: $9,577,254,641 in the October 2021 data and $13,544,705,540 in the October 2026 data, up 41%.
Total employees: 43 in October 2021 and 60 in October 2026.

## Changes in the filing (last 12 months)

### August 2026
- Updated its list of owners and control persons (Schedule A).

### April 2026
- Employees performing advisory functions went from 29 to 31.
- Regulatory assets under management went from $9,485,124,882 to $13,544,705,540 (+43%).
- Updated its list of owners and control persons (Schedule A).

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Arclight Capital Partners, LLC (CRD 161228): Form ADV filing data as of October 2026.