Camber Capital Management LP

CIK

1444043

Location

BOSTON, MA

Portfolio Value

Mid $1,035,555,250

Diversification

Diversified

Filing Date

Global Rank

#1,888 / 8,129 ▼ 951 · as of Jun 2025

Top Industry

Healthcare Plans 24.4%

3Y Alpha vs SPY

-10.7%

Period ended 1 year ago

Filed Aug 14, 2025 · 1y

22 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type

Unknown

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2025, never from the firm's own description.

Style

Concentrated

The top 10 positions are 82.3% of the book (60%+)

Turnover

Medium turnover

51.0% over the last four quarters (30% to under 100%)

Horizon

Horizon unknown

The value-weighted holding period is at least 7.8 quarters, but 3.7% of the book was already held when coverage starts

Closest benchmark: the Dow Jones Industrial Average as of 2025-07-31, active share 95.4%; sector active share 90.5% against the combined 13F book's sector weights.

Over time 22 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

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Portfolio Concentration

25 tracked positions · as of Jun 30, 2025 · Δ vs Mar 31, 2025

Top Position

29.8%

−0.2 pts

Top 5

61.0%

−0.4 pts

Top 10

81.5%

+0.4 pts

HHI

1,263

Diversified−4

Portfolio Trend

22 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2025

Sector	% Portfolio	Value	Positions
Healthcare	70.2%	$726,630,250	23
Unclassified	29.8%	$308,925,000	2

Last Quarter's Activity

Export CSV

Jun 30, 2025 vs Mar 31, 2025

Added To

Positions the filer increased

1 positions

Ticker	Company	Δ Shares	Shares	Value	Open
BMRN	Biomarin Pharmaceutical Inc	+100,000	600,000	$32,982,000
No positions match the current search.

Trimmed

Positions the filer reduced

16 positions

Ticker	Company	Δ Shares	Shares	Value
VTRS	Viatris Inc	−4,750,000	2,750,000	$24,557,500
BKD	Brookdale Senior Living Inc.	−4,100,000	2,150,000	$14,964,000
BAX	Baxter International Inc	−2,900,000	2,850,000	$86,298,000
EVH	Evolent Health, Inc.	−2,150,000	850,000	$9,571,000
ZBH	Zimmer Biomet Holdings, Inc.	−1,250,000	1,000,000	$91,210,000
CVS	CVS HEALTH Corp	−1,200,000	1,050,000	$72,429,000
CON	Concentra Group Holdings Parent, Inc.	−1,200,000	400,000	$8,228,000
PFE	Pfizer Inc	−1,000,000	1,500,000	$36,360,000
DNLI	Denali Therapeutics Inc.	−850,000	400,000	$5,596,000
ANAB	Anaptysbio, Inc	−625,000	125,000	$2,775,000
—		−550,000	450,000	$4,963,500
GMED	Globus Medical Inc	−450,000	800,000	$47,216,000
HUM	Humana Inc	−425,000	300,000	$73,344,000
MYGN	Myriad Genetics Inc	−350,000	2,000,000	$10,620,000
—		−285,000	1,600,000	$0
ASND	Ascendis Pharma A/S	−100,000	250,000	$43,150,000
No positions match the current search.

New Positions

Positions the filer opened this quarter

4 positions

Ticker	Company	Shares	Value
ICLR	Icon PLC	300,000	$43,635,000
MRK	Merck & Co., Inc.	500,000	$39,580,000
UNH	Unitedhealth Group Inc	100,000	$31,197,000
—		850,000	$0
No positions match the current search.

Sold Out

Positions the filer fully exited

9 positions

Ticker	Company	Shares	Value
PTCT	Ptc Therapeutics, Inc.	1,500,000	$76,440,000
CI	Cigna Group	200,000	$65,800,000
QGEN	Qiagen N.V.	1,400,000	$56,210,000
SRPT	Sarepta Therapeutics, Inc.	800,000	$51,056,000
IONS	Ionis Pharmaceuticals Inc	725,000	$21,873,250
MLTX	MoonLake Immunotherapeutics	441,000	$17,229,870
TXG	10x Genomics, Inc.	1,000,000	$8,730,000
GPCR	Structure Therapeutics Inc.	300,000	$5,193,000
GMAB	Genmab A/S	50,000	$979,000
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

25 tracked positions · $1,035,555,250 total · filing declares 25 positions · $1,065,228,750 · as of Jun 30, 2025

All sectors Healthcare

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	Held (qtrs)	Est. cost/share	% of Portfolio
SPY	Spdr S&P 500 ETF Trust PUT	Reduced	500,000	-1,000,000	$308,925,000	−63.2%	—	—	29.83%
ZBH	Zimmer Biomet Holdings, Inc. Healthcare	Reduced	1,000,000	-1,250,000	$91,210,000	−64.2%	16	unpriced	8.81%
BAX	Baxter International Inc Healthcare	Reduced	2,850,000	-2,900,000	$86,298,000	−56.2%	10	$37.72	8.33%
HUM	Humana Inc Healthcare	Reduced	300,000	-425,000	$73,344,000	−61.8%	5	$287.58	7.08%
CVS	CVS HEALTH Corp Healthcare	Reduced	1,050,000	-1,200,000	$72,429,000	−52.5%	5	$59.33	6.99%
GMED	Globus Medical Inc Healthcare	Reduced	800,000	-450,000	$47,216,000	−48.4%	10	$56.04	4.56%
ICLR	Icon PLC Healthcare	NEW	300,000	NEW	$43,635,000	NEW	1	$141.84	4.21%
ASND	Ascendis Pharma A/S Healthcare	Reduced	250,000	-100,000	$43,150,000	−20.9%	4	$134.60	4.17%
MRK	Merck & Co., Inc. Healthcare	NEW	500,000	NEW	$39,580,000	NEW	1	$79.49	3.82%
GSK	GSK plc CALL Healthcare	Held	1,000,000	0	$38,400,000	−0.9%	—	—	3.71%
PFE	Pfizer Inc Healthcare	Reduced	1,500,000	-7,800,000	$36,360,000	−84.6%	3	$27.12	3.51%
BMRN	Biomarin Pharmaceutical Inc Healthcare	Added	600,000	+100,000	$32,982,000	−6.7%	3	$65.66	3.18%
UNH	Unitedhealth Group Inc Healthcare	NEW	100,000	NEW	$31,197,000	NEW	1	$382.19	3.01%
VTRS	Viatris Inc Healthcare	Reduced	2,750,000	-4,750,000	$24,557,500	−62.4%	19	$13.39	2.37%
BKD	Brookdale Senior Living Inc. Healthcare	Reduced	2,150,000	-4,100,000	$14,964,000	−61.8%	22+	before history	1.45%
MYGN	Myriad Genetics Inc Healthcare	Reduced	2,000,000	-350,000	$10,620,000	−49.1%	22+	before history	1.03%
EVH	Evolent Health, Inc. Healthcare	Reduced	850,000	-2,150,000	$9,571,000	−66.3%	5	$20.41	0.92%
CON	Concentra Group Holdings Parent, Inc. Healthcare	Reduced	400,000	-1,200,000	$8,228,000	−76.3%	4	$22.03	0.79%
INGN	Inogen Inc Healthcare	Held	975,000	0	$6,854,250	−1.4%	15	$15.37	0.66%
DNLI	Denali Therapeutics Inc. Healthcare	Reduced	400,000	-850,000	$5,596,000	−67.1%	6	$19.64	0.54%
		Reduced	450,000	-550,000	$4,963,500	−44.4%	6	$9.27	0.48%
ANAB	Anaptysbio, Inc Healthcare	Reduced	125,000	-625,000	$2,775,000	−80.1%	3	$24.22	0.27%
OSUR	Orasure Technologies Inc Healthcare	Held	900,000	0	$2,700,000	−11.0%	20	$13.07	0.26%
		Reduced	1,600,000	-285,000	$0	—	14	unpriced	0.00%
		NEW	850,000	NEW	$0	NEW	1	unpriced	0.00%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.