Sirios Capital Management, L.P.
- Regulatory AUM
- $937M
- Discretionary
- $937M
- Clients
- 5
- Avg AUM / client
- $187M
- Accounts
- 5
- Employees
- 15
AUM over time
Reported AUM from Form ADV filings, plotted by filing date · as of Mar 13, 2026
Investments (13F portfolio — 81 positions, $824,768,565)
13F period Mar 31, 2026| # | Issuer | Class | Value | Shares | % of 13F | % of AUM |
|---|---|---|---|---|---|---|
| 1 | Ge Vernova Inc | COM | $107,304,724 | 122,929 | 13.0% | 11.4% |
| 2 | Taiwan Semiconductor Manufac | SPONSORED ADS | $37,939,619 | 112,264 | 4.6% | 4.05% |
| 3 | Amazon Com Inc | COM | $35,115,988 | 168,608 | 4.26% | 3.75% |
| 4 | Onto Innovation Inc | COM | $31,567,450 | 153,935 | 3.83% | 3.37% |
| 5 | Globus Med Inc | CL A | $30,515,115 | 354,168 | 3.7% | 3.26% |
| 6 | Alphabet Inc | CAP STK CL A | $30,495,738 | 106,050 | 3.7% | 3.25% |
| 7 | Dexcom Inc | COM | $26,899,878 | 428,342 | 3.26% | 2.87% |
| 8 | Carlyle Group Inc | COM | $26,239,526 | 542,251 | 3.18% | 2.8% |
| 9 | Wells Fargo & Co | COM | $25,892,516 | 325,242 | 3.14% | 2.76% |
| 10 | Unifirst Corp Mass | COM | $24,792,685 | 98,544 | 3.01% | 2.64% |
| 11 | Heico Corp New | CL A | $17,523,847 | 83,016 | 2.12% | 1.87% |
| 12 | Advanced Micro Devices Inc | COM | $16,830,781 | 82,735 | 2.04% | 1.8% |
| 13 | Alcon Ag (Nys) | COM | $16,491,628 | 218,867 | 2.0% | 1.76% |
| 14 | Clean Harbors Inc | COM | $16,404,683 | 57,213 | 1.99% | 1.75% |
| 15 | Union Pac Corp | COM | $16,307,461 | 67,214 | 1.98% | 1.74% |
| 16 | Boston Scientific Corp | COM | $16,183,664 | 257,907 | 1.96% | 1.73% |
| 17 | Old Dominion Freight Line In | COM | $15,946,399 | 81,609 | 1.93% | 1.7% |
| 18 | Vistra Corp | COM | $14,565,474 | 96,890 | 1.77% | 1.55% |
| 19 | Meta Platforms Inc | CL A | $13,829,526 | 24,172 | 1.68% | 1.48% |
| 20 | Global Pmts Inc | COM | $13,536,049 | 201,130 | 1.64% | 1.44% |
| 21 | Waste Connections Ord (Nys) | COM | $13,376,284 | 82,346 | 1.62% | 1.43% |
| 22 | Carrier Global Corporation | COM | $13,010,031 | 231,043 | 1.58% | 1.39% |
| 23 | Analog Devices Inc | COM | $12,913,939 | 40,592 | 1.57% | 1.38% |
| 24 | Eaton Corp Plc | SHS | $11,087,055 | 30,998 | 1.34% | 1.18% |
| 25 | Pnc Finl Svcs Group Inc | COM | $11,043,336 | 53,070 | 1.34% | 1.18% |
Top 25 of 81 positions from the manager's latest Form 13F · source filing (EDGAR) ↗. 13F covers long US-listed positions only. "% of AUM" is share of the firm's total regulatory AUM (Form ADV Item 5.F).
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 5 | $937M | 100.0% |
Private funds (3)
Reported in Form ADV Section 7.B.(1), filing of Mar 2024 · $540M combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Sirios Capital Partners Ii, L.P. | Hedge Fund | Delaware | $306M | 13 |
| Sirios Overseas Fund, Ltd. | Hedge Fund | Cayman Islands | $176M | 4 |
| Sirios Focus Partners, L.P. master | Hedge Fund | Cayman Islands | $58.5M | 3 |
People (3)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Brennan, John, Francis | Limited Partner And Managing Director Of Sirios Capital Management, L.P. | Jun 1999 (27y) | 75% or more | |
| Fitzpatrick, Robert, John | Chief Compliance Officer | Mar 2014 (12y) | Less than 5% | |
| Smyth, Allison, M | Chief Financial Officer | May 2018 (8y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Im Square Holding 3 Llc | Limited Partner | May 2018 | A | 10% – 25% |
| Sirios Associates, L.L.C. | General Partner Of Sirios Capital Management, L.P. | Jun 1999 | A | Less than 5% |
| Im Square Sas | Parent | Dec 2020 | B | ≈ 5.63% – 25% via Im Square Partners Holding |
| Eurazeo Se | Parent | Jun 2014 | B | ≈ 2.11% – 18.75% via Legendre Holding 36 |
| Im Square Partners Holding | Holding Company | Apr 2021 | B | ≈ 7.5% – 25% via Im Square Holding 3 Llc |
| Legendre Holding 36 | Holding Company | Jun 2015 | B | ≈ 2.81% – 18.75% via Im Square Sas |
| Jc Decaux Holding Sas | Shareholder | Jan 2022 | B | ≈ 0.53% – 9.38% via Eurazeo Se |
Undisclosed: 0% – 15% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Im Square Sas: 75% – 100% of Im Square Partners Holding × 75% – 100% of Im Square Holding 3 Llc × 10% – 25% direct ≈ 5.63% – 25% of the firm
- Eurazeo Se: 75% – 100% of Legendre Holding 36 × 50% – 75% of Im Square Sas × 75% – 100% of Im Square Partners Holding × 75% – 100% of Im Square Holding 3 Llc × 10% – 25% direct ≈ 2.11% – 18.75% of the firm
- Im Square Partners Holding: 75% – 100% of Im Square Holding 3 Llc × 10% – 25% direct ≈ 7.5% – 25% of the firm
- Legendre Holding 36: 50% – 75% of Im Square Sas × 75% – 100% of Im Square Partners Holding × 75% – 100% of Im Square Holding 3 Llc × 10% – 25% direct ≈ 2.81% – 18.75% of the firm
- Jc Decaux Holding Sas: 25% – 50% of Eurazeo Se × 75% – 100% of Legendre Holding 36 × 50% – 75% of Im Square Sas × 75% – 100% of Im Square Partners Holding × 75% – 100% of Im Square Holding 3 Llc × 10% – 25% direct ≈ 0.53% – 9.38% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Private funds (3, $540M gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Sirios Capital Partners Ii, L.P. | Hedge Fund | $306M | $5.0M | 13 |
| Sirios Overseas Fund, Ltd. | Hedge Fund | $176M | $5.0M | 4 |
| Sirios Focus Partners, L.P. | Hedge Fund | $58.5M | $5.0M | 3 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/13/2026 | 1.81 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for pooled investment vehicles
Custody
Reported custodians
- Goldman Sachs $40.8M (3% of AUM) Nov 2022
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports having custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Mar 13, 2026.
View current Form ADV (SEC/IAPD) ↗