Birnam Oak Advisors, LP — 13F Holdings & Portfolio
CIK 1997245 · latest 13F-HR filed 2026-08-14
Birnam Oak Advisors, LP manages $616.1M in 13F-reported U.S. long-equity assets across 60 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are ACWI (9.81%), GTLS (6.15%), NSC (6.04%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 8 new positions and exited 2; 28 existing positions rose in reported value and 0 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2026-08-14
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
4 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 77.1%Cumulative share of the portfolio held in the largest N positions.
SUITE 2104
NEW YORK, NY 10022
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| BIRNAM OAK ADVISORS GP, LLC Control | GENERAL PARTNER | Less than 5% | Domestic Entity |
| CLD 2023 REVOCABLE TRUST Control | LIMITED PARTNER | 75% or more | Domestic Entity |
| CLD 2023 REVOCABLE TRUST Control | MANAGING MEMBER | 75% or more | Domestic Entity |
| DELONG, CHRISTOPHER, LORD Control | CHIEF EXECUTIVE OFFICER / PORTFOLIO MANAGER | Less than 5% | Individual |
| DELONG, CHRISTOPHER, LORD Control | TRUSTEE - CLD 2023 REVOCABLE TRUST | 75% or more | Individual |
| DELONG, CHRISTOPHER, LORD Control | TRUSTEE | General partner | Individual |
| ROSS, ERIN, COLLEEN Control | CHIEF COMPLIANCE OFFICER / CHIEF OPERATING OFFICER / GENERAL COUNSEL | Less than 5% | Individual |
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- KENVUE INC$33.1M +135.9%
- UNIFIRST CORP MASS$32.4M +251.9%
- PENUMBRA INC$22.6M +71.6%
- ISHARES TR$22.1M +57.8%
- WARNER BROS DISCOVERY INC$20.9M +61.8%
New Positions
- ROKU INC$40.1M
- AES CORP$18.0M
- TOPBUILD COR$13.2M
- DOMINION ENERGY INC$10.2M
- ELECTRONIC ARTS INC$8.1M
Birnam Oak Advisors, LP Holdings (2026-06-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | ISHARES TR | ACWI | 464288257 | $60.4M | 9.81% | 385,076 | SH |
| 2 | CHART INDS INC | GTLS | 16115Q308 | $37.9M | 6.15% | 181,218 | SH |
| 3 | NORFOLK SOUTHN CORP | NSC | 655844108 | $37.2M | 6.04% | 118,385 | SH |
| 4 | KENVUE INC | KVUE | 49177J102 | $35.3M | 5.73% | 1,847,147 | SH |
| 5 | PENUMBRA INC | PEN | 70975L107 | $33.5M | 5.44% | 106,222 | SH |
| 6 | WARNER BROS DISCOVERY INC | WBD | 934423104 | $32.1M | 5.22% | 1,205,219 | SH |
| 7 | UNIFIRST CORP MASS | UNF | 904708104 | $28.3M | 4.60% | 107,060 | SH |
| 8 | ROKU INC | ROKU | 77543R102 | $23.1M | 3.75% | 167,458 | SH |
| 9 | WARNER BROS DISCOVERY INC | WBD | 934423104 | $22.4M | 3.64% | 841,509 | SH |
| 10 | KENVUE INC | KVUE | 49177J102 | $22.1M | 3.59% | 1,157,873 | SH |
| 11 | CHART INDS INC | GTLS | 16115Q308 | $21.8M | 3.53% | 104,181 | SH |
| 12 | PENUMBRA INC | PEN | 70975L107 | $20.5M | 3.33% | 65,055 | SH |
| 13 | NORFOLK SOUTHN CORP | NSC | 655844108 | $19.3M | 3.13% | 61,334 | SH |
| 14 | UNIFIRST CORP MASS | UNF | 904708104 | $16.9M | 2.75% | 64,088 | SH |
| 15 | ROKU INC | ROKU | 77543R102 | $16.9M | 2.75% | 122,542 | SH |
| 16 | VANGUARD INDEX FDS | VUG | 922908736 | $15.7M | 2.54% | 181,798 | SH |
| 17 | QORVO INC | QRVO | 74736K101 | $14.7M | 2.39% | 157,945 | SH |
| 18 | REVOLUTION MEDICINES INC | RVMD | 76155X100 | $12.6M | 2.05% | 67,470 | SH |
| 19 | AES CORP | AES | 00130H105 | $11.7M | 1.90% | 799,458 | SH |
| 20 | ECHOSTAR CORP | ECHO | 278768106 | $11.6M | 1.89% | 114,650 | SH |
| 21 | TOPBUILD COR | — | 89055F103 | $8.7M | 1.42% | 24,640 | SH |
| 22 | QORVO INC | QRVO | 74736K101 | $8.6M | 1.39% | 91,939 | SH |
| 23 | VANGUARD INDEX FDS | VTV | 922908744 | $8.5M | 1.38% | 38,880 | SH |
| 24 | REVOLUTION MEDICINES INC | RVMD | 76155X100 | $7.5M | 1.22% | 40,174 | SH |
| 25 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $7.5M | 1.22% | 15,000 | SH |
| 26 | ECHOSTAR CORP | ECHO | 278768106 | $7.4M | 1.20% | 72,778 | SH |
| 27 | TXNM ENERGY INC | TXNM | 69349H107 | $6.8M | 1.11% | 120,082 | SH |
| 28 | AES CORP | AES | 00130H105 | $6.3M | 1.02% | 427,209 | SH |
| 29 | DOMINION ENERGY INC | D | 25746U109 | $6.1M | 1.00% | 89,913 | SH |
| 30 | ELECTRONIC ARTS INC | EA | 285512109 | $4.8M | 0.78% | 23,482 | SH |
| 31 | J P MORGAN EXCHANGE TRADED F | BBJP | 46641Q217 | $4.5M | 0.74% | 60,343 | SH |
| 32 | TOPBUILD COR | — | 89055F103 | $4.4M | 0.72% | 12,496 | SH |
| 33 | TXNM ENERGY INC | TXNM | 69349H107 | $4.4M | 0.72% | 77,936 | SH |
| 34 | VANGUARD INTL EQUITY INDEX F | VGK | 922042874 | $4.4M | 0.71% | 49,554 | SH |
| 35 | ISHARES TR | IEUR | 46434V738 | $4.1M | 0.67% | 55,000 | SH |
| 36 | DOMINION ENERGY INC | D | 25746U109 | $4.1M | 0.67% | 60,087 | SH |
| 37 | ELECTRONIC ARTS INC | EA | 285512109 | $3.3M | 0.53% | 15,930 | SH |
| 38 | AMAZON COM INC | AMZN | 023135106 | $2.3M | 0.37% | 9,500 | SH |
| 39 | VIASAT INC | VSAT | 92552V100 | $2.1M | 0.34% | 23,299 | SH |
| 40 | ECHOSTAR CORP Call | ECHO | 278768106 | $1.9M | 0.30% | 18,400 | SH |
| 41 | VIASAT INC | VSAT | 92552V100 | $1.6M | 0.26% | 17,695 | SH |
| 42 | CONTROLADORA VUELA COMP DE A | VLRS | 21240E105 | $1.2M | 0.20% | 130,158 | SH |
| 43 | ECHOSTAR CORP Call | ECHO | 278768106 | $1.2M | 0.19% | 11,600 | SH |
| 44 | ISHARES TR | IVE | 464287408 | $1.1M | 0.18% | 5,000 | SH |
| 45 | MICROSOFT CORP | MSFT | 594918104 | $1.1M | 0.18% | 3,000 | SH |
| 46 | GOLDMAN SACHS GROUP INC | GS | 38141G104 | $1.0M | 0.16% | 1,000 | SH |
| 47 | APPLE INC | AAPL | 037833100 | $868.1K | 0.14% | 3,000 | SH |
| 48 | MORGAN STANLEY | MS | 617446448 | $836.2K | 0.14% | 4,000 | SH |
| 49 | CAPITAL ONE FINL CORP | COF | 14040H105 | $769.0K | 0.12% | 3,833 | SH |
| 50 | VISA INC | V | 92826C839 | $686.2K | 0.11% | 2,000 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $616.1M | 60 | 0001172661-26-003467 |
| 2026-03-31 | 2026-05-12 | $440.6M | 51 | 0001172661-26-001696 |
| 2025-12-31 | 2026-02-17 | $446.5M | 51 | 0001172661-26-001061 |
| 2025-09-30 | 2025-11-14 | $435.4M | 49 | 0001172661-25-004845 |
SUITE 2104
NEW YORK, NY 10022