Camber Capital Management LP In its 13F for Q3 2024 (holdings as of September 30, 2024, filed November 14, 2024), Camber Capital Management LP reported 31 stock positions worth $2.6 billion . Its top holding was Zimmer Biomet (ZBH) at 10.6% of the portfolio, followed by Medtronic (MDT, 9.7% ) and Baxter International (BAX, 9.7% ). Compared with Q2 2024, it opened 4 new positions, sold out of 7, added to 7 and reduced 8. The biggest buy was a new position in Ascendis Pharma A/S (ASND) and the biggest sale Universal Health Services-B (UHS, shares −87% ).
Location BOSTON, MA
CIK 0001444043
Portfolio Value $2.6B (Q3 2024) Holdings 31 stocks · $2.6B Holdings quarter Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock % Of Portfolio ▼ Shares Held Total Value Change vs Q2 2024 ZBH Zimmer Biomet Holdings Inc. 2,500,000 $269.9M Add +29.9% MDT Medtronic PLC 2,750,000 $247.6M Add +22.2% BAX Baxter International Inc. 6,500,000 $246.8M Add +18.2% VTRS Viatris Inc. 15,000,000 $174.2M No change GMED Globus Medical Inc. Class A 2,150,000 $153.8M Reduce -14.0% PTCT PTC Therapeutics Inc. 3,500,000 $129.8M No change JAZZ Jazz Pharmaceuticals PLC 1,150,000 $128.1M No change GSK GSK PLC-Spon ADR 3,000,000 $122.6M Add +12.2% MYGN Myriad Genetics Inc. 3,950,000 $108.2M Reduce -28.2% ASND Ascendis Pharma A/S 700,000 $104.5M New SRPT Sarepta Therapeutics Inc. 775,000 $96.8M Add +416.7% BKD Brookdale Senior Living Inc. 13,935,000 $94.6M Reduce -10.1% CVS CVS Health Corp. 1,500,000 $94.3M No change SEM Select Medical Holdings Corp. 2,125,000 $74.1M Reduce -16.7% QGEN Qiagen NV 1,500,000 $68.4M No change HUM Humana Inc. 200,000 $63.3M Reduce -50.0% DNLI Denali Therapeutics Inc. 2,000,000 $58.3M No change CON Concentra Group Holdings Par 1,975,000 $44.2M New ZIMV Zimvie Inc. 2,725,000 $43.2M Reduce -16.1% MEDP Medpace Holdings Inc. 125,000 $41.7M New EVH Evolent Health Inc. Class A 1,400,000 $39.6M Add +124.0% UHS Universal Health Services-B 125,000 $28.6M Reduce -86.8% MLTX Moonlake Immunotherapeutics 441,000 $22.2M Add +24.2% HLF Herbalife Ltd. 3,000,000 $21.6M No change BCYC Bicycle Therapeutics PLC-ADR 915,000 $20.7M No change INGN Inogen Inc. 2,000,000 $19.4M No change OSUR Orasure Technologies Inc. 4,250,000 $18.1M No change TBPH Theravance Biopharma Inc. 1,000,000 $8.1M No change ALKS Alkermes PLC 200,000 $5.6M New SKIN Skinhealth Systems Inc. filed as THE BEAUTY HEALTH COMPANY 1,500,000 $2.2M Reduce -57.1% GMAB Genmab A/S -SP ADR 50,000 $1.2M No change
Options reported separately and not counted above: SPY puts ($573.8M).
Other holdings (1): bonds, preferreds, convertibles and warrants · $23.1M (not counted above) Total filed on the 13F, all lines: $2.6B.
Portfolio Sells Q2 2024 → Q3 2024 Portfolio Sells quarter Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q2 2024 % Of Portfolio Change To Portfolio ▲ UHS Universal Health Services-B Reduce -86.8% 1.12% −5.72 BMRN Biomarin Pharmaceutical Inc. Sold out 0.00% −3.53 HUM Humana Inc. Reduce -50.0% 2.48% −3.34 WBA Walgreens Boots Alliance Inc. Sold out 0.00% −3.30 PRGO Perrigo Co. PLC Sold out 0.00% −1.52 ARGX Argenx SE - ADR Sold out 0.00% −1.21 MYGN Myriad Genetics Inc. Reduce -28.2% 4.24% −1.00 GMED Globus Medical Inc. Class A Reduce -14.0% 6.03% −0.64 ZIMV Zimvie Inc. Reduce -16.1% 1.69% −0.62 SEM Select Medical Holdings Corp. Reduce -16.7% 2.90% −0.58 ANAB Anaptysbio Inc. Sold out 0.00% −0.49 REPL Replimune Group Inc. Sold out 0.00% −0.47 BKD Brookdale Senior Living Inc. Reduce -10.1% 3.71% −0.41 SKIN Skinhealth Systems Inc. Reduce -57.1% 0.08% −0.18 CVAC Curevac NV Sold out 0.00% −0.07
Portfolio Buys Q2 2024 → Q3 2024 Portfolio Buys quarter Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q2 2024 % Of Portfolio Change To Portfolio ▼ ASND Ascendis Pharma A/S New 4.10% +4.10 SRPT Sarepta Therapeutics Inc. Add +416.7% 3.79% +2.87 MDT Medtronic PLC Add +22.2% 9.70% +2.81 BAX Baxter International Inc. Add +18.2% 9.67% +2.51 ZBH Zimmer Biomet Holdings Inc. Add +29.9% 10.58% +2.44 CON Concentra Group Holdings Par New 1.73% +1.73 MEDP Medpace Holdings Inc. New 1.64% +1.64 EVH Evolent Health Inc. Class A Add +124.0% 1.55% +1.09 GSK GSK PLC-Spon ADR Add +12.2% 4.81% +0.80 MLTX Moonlake Immunotherapeutics Add +24.2% 0.87% +0.26 ALKS Alkermes PLC New 0.22% +0.22
Options Activity Q2 2024 → Q3 2024 Security Type Change vs Q2 2024 Underlying Shares Value ▼ SPY SS SPDR S&P 500 ETF Trust-US put Reduce -42.9% 1,000,000 $573.8M PFE Pfizer Inc. call Sold out 2,500,000 $70.0Mbefore exit
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings Quarter Positions 13F Reported Value Top Holdings Q2 2025 23 $717.9M ZBH, BAX, HUM, CVS, GMED Q1 2025 28 $1.6B ZBH, BAX, HUM, CVS, GMED Q4 2024 35 $2.5B MDT, VTRS, ZBH, HUM, PTCT Q3 2024 31 $2.6B ZBH, MDT, BAX, VTRS, GMED Q2 2024 34 $2.6B ZBH, BAX, MDT, UHS, GMED Q1 2024 33 $2.8B ZBH, UHS, BAX, THC, VTRS