Robertson Opportunity Capital, LLC — 13F Holdings & Portfolio
CIK 1352122 · latest 13F-HR filed 2026-08-13
Robertson Opportunity Capital, LLC manages $257.7M in 13F-reported U.S. long-equity assets across 29 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are SGI (10.79%), WMB (10.52%), GOOG (10.37%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 1 new position and exited 2; 10 existing positions rose in reported value and 11 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 2026-08-13
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 = 66.9%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Mar 31, 2026.
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| DUTTA, ARINDUM Control | CHIEF COMPLIANCE OFFICER since Mar 2017 | Less than 5% | Individual |
| ROBERTSON, JAMES, BRETT Control | PRESIDENT since Feb 1995 | 75% or more | Individual |
Ownership & leadership changes · 2 filings with changes since Mar 30, 2012
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
- AddedDUTTA, ARINDUM · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ChangedROBERTSON, JAMES, BRETT · title PRESIDENT AND CHIEF COMPLIANCE OFFICER → PRESIDENT
- No longer listedNEUBERT, BRETT, CHRISTIAN · MEMBER · Less than 5% · listed since Mar 2001
- ListedNEUBERT, BRETT, CHRISTIAN · MEMBER · Less than 5%
- ListedROBERTSON, JAMES, BRETT · PRESIDENT AND CHIEF COMPLIANCE OFFICER · 75% or more · control person
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)
- IRIDIUM COMMUNICATIONS INC$5.8M +72.3%
- ALPHABET INC$5.0M +23.2%
- FISERV INC$2.1M +37.3%
- SOMNIGROUP INTERNATIONAL INC$1.6M +6.1%
- HF SINCLAIR CORP$1.5M +11.6%
Top Trims
- CAMECO CORP-$6.9M -70.7%
- ONEOK INC NEW-$4.7M -44.3%
- SYNOPSYS INC-$1.8M -17.0%
- COPART INC-$1.7M -15.1%
- MARKETAXESS HLDGS INC-$1.5M -31.2%
Robertson Opportunity Capital, LLC 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 | SOMNIGROUP INTERNATIONAL INC | SGI | 88023U101 | $27.8M | 10.79% | 354,826 | SH |
| 2 | WILLIAMS COS INC | WMB | 969457100 | $27.1M | 10.52% | 364,782 | SH |
| 3 | ALPHABET INC | GOOG | 02079K107 | $26.7M | 10.37% | 75,652 | SH |
| 4 | ARCH CAP GROUP LTD | ACGL | G0450A105 | $19.6M | 7.61% | 202,106 | SH |
| 5 | HF SINCLAIR CORP | DINO | 403949100 | $14.6M | 5.66% | 209,598 | SH |
| 6 | IRIDIUM COMMUNICATIONS INC | IRDM | 46269C102 | $13.7M | 5.33% | 250,346 | SH |
| 7 | RINGCENTRAL INC | RNG | 76680R206 | $13.3M | 5.17% | 342,000 | SH |
| 8 | RENTOKIL INITIAL PLC | RTO | 760125104 | $10.8M | 4.17% | 375,893 | SH |
| 9 | COPART INC | CPRT | 217204106 | $9.5M | 3.69% | 337,388 | SH |
| 10 | CBRE GROUP INC | CBRE | 12504L109 | $9.3M | 3.61% | 69,000 | SH |
| 11 | SYNOPSYS INC | SNPS | 871607107 | $8.8M | 3.41% | 19,700 | SH |
| 12 | META PLATFORMS INC | META | 30303M102 | $8.7M | 3.38% | 15,464 | SH |
| 13 | FISERV INC | FISV | 337738108 | $7.6M | 2.96% | 155,711 | SH |
| 14 | FLUTTER ENTMT PLC | FLUT | G3643J108 | $6.0M | 2.34% | 58,940 | SH |
| 15 | PAYPAL HLDGS INC | PYPL | 70450Y103 | $6.0M | 2.33% | 138,915 | SH |
| 16 | ONEOK INC NEW | OKE | 682680103 | $5.9M | 2.30% | 68,277 | SH |
| 17 | ELEVANCE HEALTH INC FORMERLY | ELV | 036752103 | $5.9M | 2.30% | 15,300 | SH |
| 18 | CEVA INC | CEVA | 157210105 | $5.7M | 2.21% | 120,602 | SH |
| 19 | CELLEBRITE DI LTD | CLBT | M2197Q107 | $5.3M | 2.06% | 363,103 | SH |
| 20 | NASDAQ INC | NDAQ | 631103108 | $4.3M | 1.68% | 55,039 | SH |
| 21 | CF INDUSTRIES HOLD | CF | 125269100 | $4.3M | 1.68% | 40,000 | SH |
| 22 | QORVO INC | QRVO | 74736K101 | $3.4M | 1.32% | 36,574 | SH |
| 23 | MARKETAXESS HLDGS INC | MKTX | 57060D108 | $3.3M | 1.27% | 28,830 | SH |
| 24 | GRAYSCALE ETHEREUM STAKING E | ETHE | 389638107 | $3.2M | 1.25% | 251,643 | SH |
| 25 | CAMECO CORP | CCJ | 13321L108 | $2.9M | 1.11% | 28,149 | SH |
| 26 | SERVICENOW INC | NOW | 81762P102 | $1.6M | 0.62% | 16,000 | SH |
| 27 | ISHARES ETHEREUM TR | ETHA | 46438R105 | $1.3M | 0.49% | 105,300 | SH |
| 28 | GRAYSCALE ETHEREUM STAKING | ETH | 38964R203 | $618.7K | 0.24% | 41,164 | SH |
| 29 | ALIGHT INC | ALIT | 01626W101 | $308.0K | 0.12% | 550,000 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-13 | $257.7M | 29 | 0001352122-26-000003 |
| 2026-03-31 | 2026-05-12 | $259.9M | 30 | 0001352122-26-000002 |
| 2025-12-31 | 2026-02-10 | $275.5M | 26 | 0001352122-26-000001 |
| 2025-09-30 | 2025-11-14 | $291.1M | 28 | 0001352122-25-000006 |
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