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  • PALO ALTO INVESTORS LP (Data extracted from 13F, 13D, 13G and Form 4)

PALO ALTO INVESTORS LP

AUM: $1.06 B
13-F Portfolio Value: $653.86 M
Last 13-F Filed: Q1 2026
Concentration in top 10: 63.85%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
INSMINSMED INC10.39%415,269$67,904,787-74,213-15.16%$163.5213F
BMRNBIOMARIN PHARMACEUTICAL INC5.92%685,182$38,705,931-61,074-8.18%$56.4913F
ANABANAPTYSBIO INC5.41%638,161$35,392,409-51,871-7.52%$55.4613F
BIIBBIOGEN INC3.95%140,719$25,798,014-42,852-23.34%$183.3313F
IOVAIOVANCE BIOTHERAPEUTICS INC3.41%6,349,563$22,286,966-767,113-10.78%$3.5113F
FOLDAMICUS THERAPEUTICS INC2.46%1,113,045$16,094,631-4,092,722-78.62%$14.4613F
NVCRNOVOCURE LTD2.13%1,280,439$13,956,785-18,525-1.43%$10.913F
PRTAPROTHENA CORP PLC1.8%1,208,568$11,747,281-111,942-8.48%$9.7213F
CMPXCOMPASS THERAPEUTICS INC1.23%1,514,504$8,011,726-1,017,915-40.2%$5.2913F
DNLIDENALI THERAPEUTICS INC0.69%234,582$4,503,974-406,657-63.42%$19.213F
XENEXENON PHARMACEUTICALS INC0.46%51,345$2,985,712-45,174-46.8%$58.1513F
NUVBNUVATION BIO INC0.33%508,846$2,182,949-29,233-5.43%$4.2913F
EHTHEHEALTH INC0.29%1,482,797$1,912,808-48,632-3.18%$1.2913F
CRSPCRISPR THERAPEUTICS AG0.29%39,605$1,884,010-1,621-3.93%$47.5713F
PYXSPYXIS ONCOLOGY INC0.23%1,010,510$1,475,345-26,911-2.59%$1.4613F
BCYCBICYCLE THERAPEUTICS PLC-ADR0.14%201,890$936,770-19,181-8.68%$4.6413F
ALDXALDEYRA THERAPEUTICS INC0.04%155,709$263,148-69,756-30.94%$1.6913F