Loomis Sayles & Co L P

Source: SEC Form 13F · as of Mar 2026

Loomis Sayles & Co L P holds 53 biotech & pharma companies tracked by BioSniper, totaling $1.20B in value as of Mar 2026 (SEC Form 13F).

Companies held

53

Total value held

$1.20B

CompanySharesValue
ALNYALNYLAM PHARMACEUTICALS, INC.512,097$169.4M
SUPNSUPERNUS PHARMACEUTICALS, INC.1,425,779$73.7M
LGNDLigand Pharmaceuticals Incorporated353,209$70.5M
ALKSAlkermes plc.1,784,581$63.1M
CRSPCRISPR Therapeutics AG968,135$46.1M
UNHUnitedHealth Group Incorporated Common Stock (DE)166,589$45.1M
MIRMMirum Pharmaceuticals, Inc.475,324$43.9M
AXSMAxsome Therapeutics, Inc.256,625$43.4M
RYTMRHYTHM PHARMACEUTICALS, INC.465,102$40.4M
BMRNBIOMARIN PHARMACEUTICAL INC713,795$40.3M
JAZZJazz Pharmaceuticals plc205,905$38.9M
ALHCAlignment Healthcare Inc.2,106,068$37.1M
PTCTPTC THERAPEUTICS, INC.493,603$33.6M
XENEXenon Pharmaceuticals Inc.564,897$32.8M
INSMINSMED Inc194,982$31.9M
SRRKScholar Rock Holding Corp638,629$31.4M
VCELVericel Corp975,447$31.4M
APGEApogee Therapeutics, Inc.362,781$30.5M
CRLCHARLES RIVER LABORATORIES INTERNATIONAL, INC.170,982$29.5M
TARSTarsus Pharmaceuticals, Inc.407,836$28.6M
TWSTTwist Bioscience Corp492,290$23.4M
NBIXNEUROCRINE BIOSCIENCES INC165,735$21.8M
IRONDisc Medicine, Inc.317,222$20.3M
VRDNViridian Therapeutics, Inc.\DE927,717$18.1M
RGENREPLIGEN CORP152,585$18.0M
PGNYProgyny Inc.988,390$16.8M
NEONeoGenomics Inc.1,945,388$14.4M
ANIPANI PHARMACEUTICALS INC162,986$12.5M
COLLCOLLEGIUM PHARMACEUTICAL, INC375,666$12.4M
TECHBIO-TECHNE Corp236,142$12.3M
LNTHLantheus Holdings, Inc.139,787$10.6M
BMYBRISTOL MYERS SQUIBB CO158,632$9.6M
MRKMerck & Co., Inc.74,671$9.0M
TVTXTravere Therapeutics, Inc.301,466$9.0M
GILDGILEAD SCIENCES, INC.46,065$6.4M
ABBVAbbVie Inc.26,603$5.8M
LLYELI LILLY & Co4,800$4.4M
CORCencora Inc.8,274$2.6M
IQVIQVIA Holdings Inc.9,045$1.5M
MEDPMedpace Holdings Inc.3,025$1.5M
ELVElevance Health Inc.4,502$1.3M
ARGXARGENX SE1,574$1.1M
ICLRICON plc8,665$959K
JNJJOHNSON & JOHNSON2,983$729K
PMPhilip Morris International Inc1,832$303K
PFEPFIZER INC9,201$258K
AMGNAMGEN INC637$224K
UTHRUNITED THERAPEUTICS Corp323$192K
RPRXRoyalty Pharma plc1,551$74K
MCKMcKesson Corporation38$33K
ABTABBOTT LABORATORIES288$30K
ZBHZimmer Biomet Holdings Inc.226$20K
ZTSZoetis Inc.105$12K

13F holdings reflect long positions in U.S.-listed securities as reported to the SEC. Values are point-in-time for the most recent reported quarter.

    Loomis Sayles & Co L P — Biotech 13F Holdings & Portfolio | BioSniper