Rubric Capital Management LP 13F: Quarter-over-Quarter Portfolio Changes
Rubric Capital Management LP reported a disclosed portfolio value of approximately $10.9 billion in its latest SEC Form 13F-HR filing for Q2 2026, up 33.5% quarter on quarter. Over the quarter, the fund initiated 19 new positions, bought more shares in 35 holdings, trimmed 10 holdings, and exited 14 positions.
Rubric Capital Management LP's top buy was a new stake in Fluor CORP (FLR) , equal to 2.4% of the disclosed portfolio. Its top sell was Constellation Energy (CEG) . The fund exited the position completely after it had accounted for 2.4% of the previous portfolio.
New PositionsQ2 2026
Securities disclosed for the first time in Q2 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Portfolio Weight | History |
|---|---|---|---|
| FLUOR CORP | FLR | 2.4% | History → |
| AMAZON.COM INC | AMZN | 2.0% | Holders → |
| SONOCO PRODS CO | SON | 0.6% | Holders → |
| STUBHUB HLDGS INC | STUB | 0.6% | Holders → |
| GALAXY DIGITAL INC. | GLXY | 0.6% | Holders → |
| ESTABLISHMENT LABS HLDGS INC | ESTA | 0.5% | Holders → |
| ALVOTECH | ALVO | 0.5% | Holders → |
| VERSIGENT PLC | VGNT | 0.3% | Holders → |
| TRIPADVISOR INC | TRIP | 0.3% | Holders → |
| BIOHAVEN LTD | BHVN | 0.2% | Holders → |
| ANI PHARMACEUTICALS INC | ANIP | 0.2% | Holders → |
| UNIQURE NV | QURE | 0.2% | Holders → |
| HUDSON PACIFIC PROPERTIES IN | HPP | 0.1% | Holders → |
| GDS HLDGS LTD | GDS | 0.1% | Holders → |
| OMEROS CORP | OMER | 0.1% | Holders → |
| ABEONA THERAPEUTICS INC | ABEO | 0.0% | Holders → |
| OPKO HEALTH INC | UNKNOWN | 0.0% | Holders → |
| TETRA TECHNOLOGIES INC DEL | TTI | 0.0% | Holders → |
| SERVICE PPTYS TR | SVC | 0.0% | Holders → |
Top BuysQ2 2026
Showing the top 10 buys among 35 existing positions where the fund bought more shares in Q2 2026. Ranked by portfolio-weight impact, with the percentage of additional shares shown separately.
| Company | Ticker | Portfolio Weight Change | More Shares | History |
|---|---|---|---|---|
| PENNYMAC FINL SVCS INC NEW | PFSI | +1.3% | +3006.3% | Holders → |
| ARDELYX INC | ARDX | +0.6% | +770.7% | Holders → |
| ADMA BIOLOGICS INC | ADMA | +0.5% | +416.2% | Holders → |
| MANNKIND CORP | MNKD | +0.6% | +397.2% | Holders → |
| VENTURE GLOBAL INC | VG | +0.3% | +260.7% | Holders → |
| MISSION PRODUCE INC | AVO | +0.4% | +246.5% | Holders → |
| AMCOR PLC | AMCR | +1.0% | +227.9% | Holders → |
| GILDAN ACTIVEWEAR INC | GIL | +1.2% | +222.4% | Holders → |
| DNOW INC | DNOW | +0.3% | +207.6% | Holders → |
| NURIX THERAPEUTICS INC | NRIX | +1.1% | +192.2% | Holders → |
Top SellsQ2 2026
The fund's top sells among positions it retained in Q2 2026. Ranked by portfolio-weight impact. Full exits are listed separately.
| Company | Ticker | Portfolio Weight Change | Shares Sold | History |
|---|---|---|---|---|
| CARTERS INC | CRI | -0.4% | 91.5% | Holders → |
| PROTO LABS INC | PRLB | -0.3% | 77.7% | Holders → |
| ADEIA INC | ADEA | -0.6% | 50.4% | Holders → |
| TREVI THERAPEUTICS INC | TRVI | -0.1% | 32.5% | Holders → |
| MERCURY GENL CORP NEW | MCY | -0.8% | 28.5% | Holders → |
| EDGEWELL PERSONAL CARE CO | EPC | -0.2% | 11.4% | Holders → |
| ECOVYST INC | ECVT | -0.5% | 10.1% | Holders → |
| AMNEAL PHARMACEUTICALS INC | AMRX | -0.1% | 7.9% | Holders → |
| PRIMO BRANDS CORPORATION | PRMB | -0.0% | 4.0% | Holders → |
| EDESA BIOTECH INC | EDSA | 0.0% | 2.6% | Holders → |
Full ExitsQ2 2026
Positions present in the prior 13F-HR filing that no longer appear in Q2 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| CONSTELLATION ENERGY | CEG | 2.4% |
| AKAMAI TECHNOLOGIES INC | AKAM | 1.8% |
| TELEPHONE & DATA SYS INC | TDS | 1.0% |
| PROTAGONIST THERAPEUTICS INC | PTGX | 0.6% |
| CALAVO GROWERS INC | CVGW | 0.4% |
| TELESAT CORP | TSAT | 0.4% |
| BIOMARIN PHARMACEUTICAL INC | BMRN | 0.3% |
| INDIVIOR PLC | INDV | 0.2% |
| ACADIA HEALTHCARE COMPANY IN | ACHC | 0.2% |
| CAPRI HOLDINGS LTD | CPRI | 0.1% |
| EMBECTA CORP | EMBC | 0.1% |
| HELEN OF TROY LTD | HELE | 0.1% |
| OPKO HEALTH INC | OPK 3.75 01/15/29 | 0.0% |
| PLAYSTUDIOS INC | MYPS | 0.0% |
Net Portfolio Value ChangeQ2 2026
- $8.2BPrior quarter
- $10.9BCurrent quarter
- +$2.7BNet delta
- +33.5%% change
Methodology & FAQ
How Rubric Capital Management LP Quarterly Changes Are Computed
All deltas are sourced from sequential SEC Form 13F-HR filings for Rubric Capital Management LP: each row joins the most recent filing against the immediately preceding quarterly filing for the same fund. Share-count changes reflect reported trading activity, while portfolio weights can also move because of market price changes. Portfolio weights are normalized to exclude listed options for comparability. A complete description, including how confidential treatment filings are handled, is documented in the Methodology.
What stocks did Rubric Capital Management LP buy in Q2 2026?
In Q2 2026, Rubric Capital Management LP initiated 19 new positions (FLUOR CORP (FLR), AMAZON.COM INC (AMZN), SONOCO PRODS CO (SON), STUBHUB HLDGS INC (STUB), GALAXY DIGITAL INC. (GLXY), ESTABLISHMENT LABS HLDGS INC (ESTA), ALVOTECH (ALVO), VERSIGENT PLC (VGNT), TRIPADVISOR INC (TRIP), BIOHAVEN LTD (BHVN), ANI PHARMACEUTICALS INC (ANIP), UNIQURE NV (QURE), HUDSON PACIFIC PROPERTIES IN (HPP), GDS HLDGS LTD (GDS), OMEROS CORP (OMER), ABEONA THERAPEUTICS INC (ABEO), OPKO HEALTH INC (UNKNOWN), TETRA TECHNOLOGIES INC DEL (TTI), SERVICE PPTYS TR (SVC)); bought more shares of PENNYMAC FINL SVCS INC NEW (PFSI), ARDELYX INC (ARDX), ADMA BIOLOGICS INC (ADMA), MANNKIND CORP (MNKD), VENTURE GLOBAL INC (VG) (the largest 5 of 35 adds).
What stocks did Rubric Capital Management LP sell in Q2 2026?
In Q2 2026, Rubric Capital Management LP fully sold 14 positions (CONSTELLATION ENERGY (CEG), AKAMAI TECHNOLOGIES INC (AKAM), TELEPHONE & DATA SYS INC (TDS), PROTAGONIST THERAPEUTICS INC (PTGX), CALAVO GROWERS INC (CVGW), TELESAT CORP (TSAT), BIOMARIN PHARMACEUTICAL INC (BMRN), INDIVIOR PLC (INDV), ACADIA HEALTHCARE COMPANY IN (ACHC), CAPRI HOLDINGS LTD (CPRI), EMBECTA CORP (EMBC), HELEN OF TROY LTD (HELE), OPKO HEALTH INC (OPK 3.75 01/15/29), PLAYSTUDIOS INC (MYPS)); reduced holdings in CARTERS INC (CRI), PROTO LABS INC (PRLB), ADEIA INC (ADEA), TREVI THERAPEUTICS INC (TRVI), MERCURY GENL CORP NEW (MCY) (the largest 5 of 10 reductions).
Which positions did Rubric Capital Management LP initiate in Q2 2026?
Rubric Capital Management LP established 19 new positions in Q2 2026: FLUOR CORP (FLR, 2.4%), AMAZON.COM INC (AMZN, 2.0%), SONOCO PRODS CO (SON, 0.6%), STUBHUB HLDGS INC (STUB, 0.6%), GALAXY DIGITAL INC. (GLXY, 0.6%), ESTABLISHMENT LABS HLDGS INC (ESTA, 0.5%), ALVOTECH (ALVO, 0.5%), VERSIGENT PLC (VGNT, 0.3%), TRIPADVISOR INC (TRIP, 0.3%), BIOHAVEN LTD (BHVN, 0.2%), ANI PHARMACEUTICALS INC (ANIP, 0.2%), UNIQURE NV (QURE, 0.2%), HUDSON PACIFIC PROPERTIES IN (HPP, 0.1%), GDS HLDGS LTD (GDS, 0.1%), OMEROS CORP (OMER, 0.1%), ABEONA THERAPEUTICS INC (ABEO, 0.0%), OPKO HEALTH INC (UNKNOWN, 0.0%), TETRA TECHNOLOGIES INC DEL (TTI, 0.0%), SERVICE PPTYS TR (SVC, 0.0%).
Which existing positions saw the largest allocation increases for Rubric Capital Management LP in Q2 2026?
Of 35 existing positions with share-count increases in Q2 2026, the largest were: PENNYMAC FINL SVCS INC NEW (PFSI, +1.3% weight, +3006.3% shares), ARDELYX INC (ARDX, +0.6% weight, +770.7% shares), ADMA BIOLOGICS INC (ADMA, +0.5% weight, +416.2% shares), MANNKIND CORP (MNKD, +0.6% weight, +397.2% shares), VENTURE GLOBAL INC (VG, +0.3% weight, +260.7% shares), MISSION PRODUCE INC (AVO, +0.4% weight, +246.5% shares), AMCOR PLC (AMCR, +1.0% weight, +227.9% shares), GILDAN ACTIVEWEAR INC (GIL, +1.2% weight, +222.4% shares), DNOW INC (DNOW, +0.3% weight, +207.6% shares), NURIX THERAPEUTICS INC (NRIX, +1.1% weight, +192.2% shares).
Which positions did Rubric Capital Management LP fully exit in Q2 2026?
Rubric Capital Management LP fully exited 14 positions in Q2 2026: CONSTELLATION ENERGY (CEG, last-reported weight 2.4%), AKAMAI TECHNOLOGIES INC (AKAM, last-reported weight 1.8%), TELEPHONE & DATA SYS INC (TDS, last-reported weight 1.0%), PROTAGONIST THERAPEUTICS INC (PTGX, last-reported weight 0.6%), CALAVO GROWERS INC (CVGW, last-reported weight 0.4%), TELESAT CORP (TSAT, last-reported weight 0.4%), BIOMARIN PHARMACEUTICAL INC (BMRN, last-reported weight 0.3%), INDIVIOR PLC (INDV, last-reported weight 0.2%), ACADIA HEALTHCARE COMPANY IN (ACHC, last-reported weight 0.2%), CAPRI HOLDINGS LTD (CPRI, last-reported weight 0.1%), EMBECTA CORP (EMBC, last-reported weight 0.1%), HELEN OF TROY LTD (HELE, last-reported weight 0.1%), OPKO HEALTH INC (OPK 3.75 01/15/29, last-reported weight 0.0%), PLAYSTUDIOS INC (MYPS, last-reported weight 0.0%).
Which existing positions saw the largest allocation reductions for Rubric Capital Management LP in Q2 2026?
Of 10 existing positions with share-count reductions in Q2 2026, the largest were: CARTERS INC (CRI, -0.4% weight, -91.5% shares), PROTO LABS INC (PRLB, -0.3% weight, -77.7% shares), ADEIA INC (ADEA, -0.6% weight, -50.4% shares), TREVI THERAPEUTICS INC (TRVI, -0.1% weight, -32.5% shares), MERCURY GENL CORP NEW (MCY, -0.8% weight, -28.5% shares), EDGEWELL PERSONAL CARE CO (EPC, -0.2% weight, -11.4% shares), ECOVYST INC (ECVT, -0.5% weight, -10.1% shares), AMNEAL PHARMACEUTICALS INC (AMRX, -0.1% weight, -7.9% shares), PRIMO BRANDS CORPORATION (PRMB, -0.0% weight, -4.0% shares), EDESA BIOTECH INC (EDSA, 0.0% weight, -2.6% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity. All deltas on this page are sourced from sequential SEC Form 13F-HR filings.