HolderBook

Tekla Capital Management LLC

Reported holdings as of Q2 2023, from 19 quarterly filings.

This filer last reported in Q2 2023; the most recent quarter on file across all filers is Q2 2026. Firms that restructure stop filing under one CIK and start under another, so a successor entity may hold these positions now under a similar name.

CIK
1300336
Reported value
$2.6B
Positions
166
Top 10 weight
40.3%
Filed
2023-08-10
Days after quarter end
41

Holdings

SecurityTickerValue SharesWeightWeight change Held Change
AMGEN INCAMGN$136.9M616,5395.36%+0.24pp19q+10.9%+$13.5M
JOHNSON & JOHNSONJNJ$119.5M721,7794.68%+0.42pp19qHELD
GILEAD SCIENCES INCGILD$118.2M1,533,8844.63%-0.30pp19q-1.7%-$2.0M
REGENERON PHARMACEUTICALSREGN$116.0M161,4184.54%+0.06pp19q+12.8%+$13.2M
VERTEX PHARMACEUTICALS INCVRTX$111.9M318,0434.38%+0.42pp19q-3.7%-$4.3M
ELI LILLY & COLLY$100.1M213,3523.92%+0.14pp19q-26.2%-$35.4M
UNITEDHEALTH GROUP INCUNH$99.5M206,9613.89%-0.32pp19q-11.6%-$13.1M
MERCK & CO INCMRK$84.0M728,1543.29%+1.05pp19q+31.9%+$20.3M
ABBVIE INCABBV$73.5M545,6292.88%-0.23pp19q+6.7%+$4.6M
BIOGEN INCBIIB$70.6M247,9432.76%+0.21pp19q+2.9%+$2.0M
ASTRAZENECA PLCAZN$69.9M976,6762.74%+0.11pp19q-1.6%-$1.1M
ILLUMINA INCILMN$63.2M336,9792.47%-0.61pp19q-3.2%-$2.1M
ABBOTT LABORATORIESABT$60.2M552,4552.36%-0.05pp19q-11.4%-$7.8M
PFIZER INCPFE$59.6M1,624,4762.33%-0.43pp19q-8.5%-$5.5M
THERMO FISHER SCIENTIFIC INCTMO$51.6M98,9872.02%-0.04pp19q+5.6%+$2.8M
ELEVANCE HEALTH INC FORMERLYELV$50.7M114,0701.98%-0.01pp19qHELD
MODERNA INCMRNA$41.8M343,6951.63%-0.25pp14q+6.7%+$2.6M
BOSTON SCIENTIFIC CORPBSX$35.6M657,7901.39%+0.31pp19q+16.2%+$5.0M
DANAHER CORP DELDHR$34.3M142,8131.34%+0.33pp19q+35.1%+$8.9M
MEDTRONIC PLCMDT$30.3M344,4171.19%+0.13pp19qHELD
IDEXX LABS INCIDXX$29.4M58,5951.15%+0.04pp19qHELD
DEXCOM INCDXCM$29.4M228,7471.15%+0.14pp13qHELD
BRISTOL-MYERS SQUIBB COBMY$29.3M458,4981.15%-0.60pp19q-30.9%-$13.1M
INTUITIVE SURGICAL INCISRG$28.7M83,9801.12%+0.03pp19q-25.5%-$9.8M
ALNYLAM PHARMACEUTICALS INCALNY$27.2M143,2141.06%-0.03pp19qHELD
THE CIGNA GROUPCI$27.0M96,3391.06%-0.72pp19q-47.2%-$24.2M
MCKESSON CORPMCK$26.5M61,9551.04%+0.14pp19q-6.8%-$1.9M
ARGENX SEARGX$25.5M65,5531.00%-0.25pp18q-25.8%-$8.9M
HCA HEALTHCARE INCHCA$25.0M82,4030.98%+0.09pp19q-7.1%-$1.9M
STRYKER CORPORATIONSYK$24.8M81,1280.97%+0.19pp19q+13.3%+$2.9M
IQVIA HLDGS INCIQV$24.5M109,1290.96%+0.48pp19q+72.9%+$10.3M
ZOETIS INCZTS$23.6M136,9140.92%+0.06pp19qHELD
CHARLES RIV LABS INTL INCCRL$23.4M111,1830.91%+0.01pp19q-5.8%-$1.5M
SEAGEN INCSGEN$21.6M112,3310.85%-0.89pp11q-50.0%-$21.6M
SAREPTA THERAPEUTICS INCSRPT$20.5M179,4370.80%-0.69pp19q-37.2%-$12.2M
NOVO-NORDISK A SNVO$19.9M122,7770.78%+0.10pp19q+10.3%+$1.9M
Oculis Holding AG$18.8M1,690,7410.74%+0.32pp2qHELD
MOLINA HEALTHCARE INCMOH$18.6M61,8560.73%+0.10pp13qHELD
JAZZ PHARMACEUTICALS PLCJAZZ$18.3M147,7790.72%-0.11pp19qHELD
BIOMARIN PHARMACEUTICAL INCBMRN$18.3M210,7890.72%-0.40pp19q-29.8%-$7.7M
EDWARDS LIFESCIENCES CORPEW$17.9M189,5970.70%+0.16pp19q+10.8%+$1.7M
HUMANA INCHUM$16.5M36,7940.64%-0.04pp19qHELD
APELLIS PHARMACEUTICALS INCAPLS$15.8M173,2480.62%+0.28pp16q+28.2%+$3.5M
BAXTER INTL INCBAX$14.8M324,3700.58%+0.47pp2q+381.9%+$11.7M
EXELIXIS INCEXEL$13.9M726,6390.54%+0.01pp2qHELD
NOVARTIS AGNVS$13.7M136,2250.54%+0.06pp19qHELD
KARUNA THERAPEUTICS INCKRTX$12.7M58,5770.50%+0.13pp13q+9.6%+$1.1M
INSULET CORPPODD$12.6M43,8470.49%-newNEW
GUARDANT HEALTH INCGH$12.4M346,0840.48%+0.06pp15q-26.7%-$4.5M
ASCENDIS PHARMA A/SASND$12.4M138,7910.48%-0.02pp19q+12.1%+$1.3M
SPDR SERIES TRUSTXBI$12.3M147,6770.48%+0.05pp6qHELD
PHYSICIANS RLTY TRDOCXXXX$12.2M873,6550.48%-0.02pp19qHELD
TENET HEALTHCARE CORPTHC$12.1M149,0700.47%-newNEW
BIONTECH SEBNTX$11.2M103,8580.44%-0.05pp10qHELD
NEUROCRINE BIOSCIENCES INCNBIX$10.6M112,9080.42%-0.02pp19qHELD
ZIMMER BIOMET HOLDINGS INCZBH$9.8M67,3560.38%+0.05pp19qHELD
RALLYBIO CORPRLYB$9.8M1,727,0670.38%+0.01pp8qHELD
VAXCYTE INCPCVX$9.7M194,2320.38%+0.37pp3q+3784.6%+$9.5M
ALKERMES PLCALKS$9.7M309,6130.38%+0.05pp8qHELD
DENALI THERAPEUTICS INCDNLI$9.6M324,8290.38%+0.09pp11qHELD
AVANTOR INCAVTR$9.4M459,4880.37%flat3qHELD
OMEGA HEALTHCARE INVS INCOHI$9.4M306,4330.37%+0.05pp19qHELD
UNITED THERAPEUTICS CORP DELUTHR$9.2M41,4650.36%-0.16pp19q-32.2%-$4.4M
INTRA-CELLULAR THERAPIES INCITCI$8.3M131,4350.33%-0.03pp19q-23.7%-$2.6M
ACADIA HEALTHCARE COMPANY INACHC$8.0M100,9120.31%-0.20pp6q-45.9%-$6.8M
MADRIGAL PHARMACEUTICALS INCMDGL$8.0M34,4340.31%+0.20pp2q+175.9%+$5.1M
RESMED INCRMD$7.6M34,7040.30%-0.31pp19q-52.6%-$8.4M
HORIZON THERAPEUTICS PUB LHZNP$7.4M72,4250.29%-newNEW
INSPIRE MED SYS INCINSP$7.1M22,0180.28%-newNEW
CYTOKINETICS INCCYTK$7.1M219,0250.28%-0.01pp7qHELD
STERIS PLCSTE$7.0M31,0720.27%+0.05pp18qHELD
SANOFI SASNY$6.7M123,4540.26%flat19qHELD
R1 RCM INCRCM$6.6M356,8510.26%+0.05pp5qHELD
CVS HEALTH CORPCVS$6.5M93,6210.25%-0.01pp19qHELD
MEDPACE HLDGS INCMEDP$6.5M26,9180.25%+0.19pp15q+185.3%+$4.2M
IMMUNOVANT INCIMVT$6.4M336,2000.25%+0.18pp2q+191.3%+$4.2M
INTELLIA THERAPEUTICS INCNTLA$6.3M154,2690.25%+0.03pp10qHELD
LTC PPTYS INCLTC$6.0M182,2930.24%-0.01pp19qHELD
SABRA HEALTH CARE REIT INCSBRA$6.0M510,6600.24%+0.01pp19qHELD
SMITH & NEPHEW PLCSNN$5.9M181,7100.23%+0.04pp19qHELD
CHINOOK THERAPEUTICS INCKDNY$5.8M150,8630.23%+0.15pp2q+80.7%+$2.6M
WEST PHARMACEUTICAL SVSC INCWST$5.8M15,0360.23%+0.03pp2qHELD
CEREVEL THERAPEUTICS HLDNG ICERE$5.6M176,4830.22%+0.06pp7qHELD
LIVANOVA PLCLIVN$5.6M108,4800.22%+0.11pp2q+69.8%+$2.3M
ALLSCRIPTS HEALTHCARE SOLUTNMDRX$5.4M428,5800.21%flat4qHELD
AGILENT TECHNOLOGIES INCA$5.2M43,1910.20%-0.02pp17qHELD
MARINUS PHARMACEUTICALS INCMRNS$4.5M411,1010.17%+0.05pp2q-10.0%-$496.1K
UNIQURE NVQURE$4.1M356,2800.16%-0.34pp19q-45.4%-$3.4M
CENCORA INCCOR$3.9M20,4170.15%+0.03pp3qHELD
MEDICAL PROPERTIES TRUST INCMPT$3.8M411,7430.15%+0.02pp19qHELD
BEONE MEDICINES LTDONC$3.7M20,9520.15%-0.03pp19qHELD
IONIS PHARMACEUTICALS INCIONS$3.6M87,8400.14%+0.02pp19qHELD
BIOCRYST PHARMACEUTICALS INCBCRX$3.6M504,5280.14%-0.02pp6qHELD
REATA PHARMACEUTICALS INCRETA$3.5M34,2500.14%+0.07pp2q+91.9%+$1.7M
TEVA PHARMACEUTICAL INDS LTDTEVA$3.5M459,6510.14%-0.02pp19qHELD
WELLTOWER INCWELL$3.4M41,4840.13%+0.02pp19qHELD
HEALTHCARE RLTY TRHR$3.3M174,6860.13%flat4qHELD
VENTAS INCVTR$3.2M66,6810.12%+0.01pp19qHELD
ISHARES TRIBB$3.1M24,5690.12%flat4qHELD
HEALTHPEAK PROPERTIES INCDOC$3.0M150,3920.12%-0.01pp15qHELD
AKERO THERAPEUTICS INCAKRO$2.9M61,4970.11%-newNEW
ADAPTIVE BIOTECHNOLOGIES CORADPT$2.8M422,2810.11%-0.03pp12qHELD
GALERA THERAPEUTICS INCGRTX$2.8M898,3740.11%+0.02pp15qHELD
XENON PHARMACEUTICALS INCXENE$2.6M67,5060.10%-0.01pp5q-19.4%-$624.0K
BRIDGEBIO PHARMA INCBBIO$2.6M150,9210.10%+0.01pp2qHELD
KONINKLIJKE PHILIPS N VPHG$2.5M114,7650.10%+0.02pp19q+4.5%+$106.4K
CARIBOU BIOSCIENCES INCCRBU$2.4M567,1470.09%-0.02pp8qHELD
MIRATI THERAPEUTICS INCMRTX$2.4M65,4900.09%flat19qHELD
ICON PUB LTD COICLR$2.3M9,3340.09%+0.02pp10qHELD
AMYLYX PHARMACEUTICALS INCAMLX$2.2M104,0070.09%-newNEW
ASSERTIO HOLDINGS INCASRT$2.2M410,5750.09%-0.01pp9qHELD
MEREO BIOPHARMA GROUP PLCMREO$2.0M1,551,0820.08%+0.04pp10qHELD
89BIO INCETNB$2.0M105,8980.08%+0.02pp2qHELD
ARDELYX INCARDX$1.8M539,4080.07%-0.03pp19qHELD
PYXIS ONCOLOGY INCPYXS$1.8M708,3030.07%-0.04pp7qHELD
PERRIGO CO PLCPRGO$1.7M51,2240.07%flat19qHELD
TAKEDA PHARMACEUTICAL CO LTDTAK$1.7M105,0730.06%flat18qHELD
GLOBAL MED REIT INCGMREXXXX$1.6M174,8970.06%flat19qHELD
GSK PLCGSK$1.5M41,8520.06%flat4qHELD
TACTILE SYS TECHNOLOGY INCTCMD$1.5M58,4720.06%+0.04pp2q+69.8%+$599.3K
ARCUTIS BIOTHERAPEUTICS INCARQT$1.4M148,8740.06%-0.01pp10qHELD
XENCOR INCXNCR$1.4M56,6750.06%-newNEW
CRINETICS PHARMACEUTICALS INCRNX$1.4M78,5290.06%+0.01pp3qHELD
MORPHOSYS AGMOR$1.3M177,1910.05%+0.04pp15q+116.4%+$712.1K
CRISPR THERAPEUTICS AGCRSP$1.3M22,5710.05%-0.05pp19q-59.0%-$1.8M
NATERA INCNTRA$1.2M24,6360.05%-0.06pp5q-50.0%-$1.2M
EDGEWISE THERAPEUTICS INCEWTX$1.2M150,4180.05%flat7q-22.9%-$345.7K
ZENTALIS PHARMACEUTICALS INCZNTL$1.1M40,1560.04%-newNEW
BICYCLE THERAPEUTICS PLCBCYC$1.1M44,3380.04%-0.03pp6q-50.0%-$1.1M
G1 THERAPEUTICS INCGTHX$1.1M423,8690.04%flat10qHELD
FULCRUM THERAPEUTICS INCFULC$847.7K256,8880.03%+0.03pp3q+338.8%+$654.6K
SCHOLAR ROCK HLDG CORPSRRK$820.6K108,8330.03%flat11qHELD
DIVERSIFIED HEALTHCARE TRDHC$804.9K357,7200.03%+0.01pp15qHELD
THESEUS PHARMACEUTICALS INCTHRX$699.8K75,0000.03%flat7qHELD
ARCUS BIOSCIENCES INCRCUS$667.0K32,8390.03%flat2qHELD
BLACK DIAMOND THERAPEUTICS IBDTX$666.5K131,9900.03%+0.02pp10qHELD
ITEOS THERAPEUTICS INCITOS$605.5K45,7350.02%flat2qHELD
INTERCEPT PHARMACEUTICALS INICPT$575.9K52,0670.02%flat19qHELD
UNIVERSAL HEALTH RLTY INCOMEUHT$535.7K11,2580.02%flat15qHELD
NATIONAL HEALTH INVS INCNHI$526.2K10,0380.02%flat14qHELD
BEAM THERAPEUTICS INCBEAM$505.0K15,8170.02%flat7qHELD
TSCAN THERAPEUTICS INCTCRX$500.0K200,0000.02%flat8qHELD
ALX ONCOLOGY HLDGS INCALXO$497.2K66,2110.02%+0.01pp8qHELD
COMMUNITY HEALTHCARE TR INCCHCT$492.0K14,9000.02%flat15qHELD
NOVABRIDGE BIOSCIENCESNBP$486.1K162,5800.02%flat10qHELD
NOVAVAX INCNVAX$474.0K63,8000.02%flat17qHELD
HILLEVAX INCHLVX$464.1K27,0000.02%-newNEW
SUTRO BIOPHARMA INCSTRO$457.3K98,3540.02%flat19qHELD
COMMUNITY HEALTH SYS INC NEWCYH$388.7K88,3350.02%flat19qHELD
AFFIMED N VAFMD$350.6K586,0380.01%flat11qHELD
REPARE THERAPEUTICS INCRPTX$308.4K29,1500.01%flat7qHELD
ALTIMMUNE INCALT$264.8K75,0000.01%flat2qHELD
FUSION PHARMACEUTICALS INCFUSN$203.1K43,3940.01%flat8qHELD
CODEXIS INCCDXS$193.6K69,1250.01%flat4qHELD
HARPOON THERAPEUTICS INCHARPXXXX$184.5K259,9100.01%flat6qHELD
PRECISION BIOSCIENCES INCDTIL$118.1K224,5340.00%flat10qHELD
SPECTRUM PHARMACEUTICALS INCSPPI$110.1K114,6700.00%flat19qHELD
ADICET BIO INCACET$98.0K40,3290.00%-0.01pp7qHELD
PRAXIS PRECISION MEDICINES IPRAX$86.2K75,0000.00%flat11qHELD
ARCA BIOPHARMA INCABIO$65.9K32,4610.00%flat17qHELD
NKARTA INCNKTX$63.5K28,9880.00%flat10qHELD
MALLINCKRODT PLCMNKTQ$41.4K35,0480.00%-0.01pp3qHELD
CORBUS PHARMACEUTICALS HLDGSCRBP$40.3K5,1430.00%flat2qHELD
VYNE THERAPEUTICS INCVYNE$30.5K7,5200.00%flat2qHELD
NEXGEL INCNXGL$10.7K4,2430.00%flat6qHELD
BELLICUM PHARMACEUTICALS INCBLCM$2.2K6,0000.00%flat14qHELD

By sector

Industry comes from the SIC code on each company's own SEC filings, which is self-reported and sometimes out of date. Derivative exposure is counted with the shares. Securities the SEC assigns no industry - funds, trusts, foreign issues - are shown as not classified rather than dropped.

Biotech & Pharma 67.0%Medical Devices 9.7%Insurance 8.3%Instruments & Controls 3.4%Healthcare Services 2.6%Real Estate 1.6%Other sectors 1.2%Not classified 6.3%
 
SectorValueShare
Biotech & Pharma$1.7B67.0%
Medical Devices$246.8M9.7%
Insurance$212.3M8.3%
Instruments & Controls$85.9M3.4%
Healthcare Services$65.6M2.6%
Real Estate$40.4M1.6%
Other sectors$30.6M1.2%
Not classified$160.8M6.3%

Quarter by quarter

QuarterValuePositions NewAddedTrimmed ExitedTop 10 Days to file
Q2 2023$2.6B166928302040.3%41
Q1 2023$2.6B1772027241539.7%40
Q4 2022$2.6B172132535939.1%41
Q3 2022$2.4B1681134382038.7%32
Q2 2022$2.5B17762733438.4%29
Q1 2022$2.8B1751426251036.0%43
Q4 2021$3.1B1711627391735.3%45
Q3 2021$3.1B1721743393433.8%43
Q2 2021$3.1B189342381031.6%44
Q1 2021$2.9B1962731473130.4%44
Q4 2020$2.8B2001541421928.2%43
Q3 2020$2.7B2041250323035.4%44
Q2 2020$2.6B222114632637.9%44
Q1 2020$2.2B2171451751142.7%44
Q4 2019$2.6B214286153638.9%44
Q3 2019$2.3B1921452531941.8%44
Q2 2019$2.5B1971644541340.3%45
Q1 2019$2.5B1941246692140.3%44
Q4 2018$2.3B203000040.9%44

Rows marked UNVERIFIED ID, PLACEHOLDER ID, TICKER AS ID or NON-CUSIP ID carry an identifier that is not a valid CUSIP. They are shown because the filer reported that money, but treat the security named with caution - hover the chip for what is wrong with it, and see the methodology.

Held counts consecutive filings in which this manager reported the position, and can reach further back than the quarters listed above: the tabs begin at Q4 2018 because earlier coverage is too sparse to describe a market, but tenure is counted over every filing we hold, some reaching to 2007. A position sold and later rebought starts again from one.

Weight change is the shift in this position's share of the whole book, in percentage points. It is the more useful column: when money flows into or out of a broad fund, almost every holding is bought or sold at once, so added and trimmed largely track flows. A weight that rose while the book shrank is a decision. Both compare with the previous quarter this filer reported, not the previous calendar quarter.