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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: $470.00 M
Last 13-F Filed: Q2 2025
Concentration in top 10: 75.23%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
INSMINSMED INC18.52%865,113$87,064,972-122,040-12.36%$100.6413F
ACADACADIA PHARMACEUTICALS INC11.76%2,563,209$55,288,418-100,716-3.78%$21.5713F
BMRNBIOMARIN PHARMACEUTICAL INC9.83%840,470$46,200,636-150,737-15.21%$54.9713F
FOLDAMICUS THERAPEUTICS INC6.84%5,610,513$32,148,239-1,734,489-23.61%$5.7313F
UTHRUNITED THERAPEUTICS CORP5.84%95,482$27,436,753-9,746-9.26%$287.3513F
BIIBBIOGEN INC5.5%205,759$25,841,2738360.41%$125.5913F
ALNYALNYLAM PHARMACEUTICALS INC5.24%75,535$24,631,208-7,953-9.53%$326.0913F
PTCTPTC THERAPEUTICS INC4.22%406,469$19,851,9462,2730.56%$48.8413F
ANABANAPTYSBIO INC3.84%812,821$18,044,626-207,892-20.37%$22.213F
NVCRNOVOCURE LTD3.64%962,396$17,130,649-39,665-3.96%$17.813F
STAASTAAR SURGICAL CO2.83%791,879$13,287,730266,86250.83%$16.7813F
AGIOAGIOS PHARMACEUTICALS INC1.9%268,783$8,939,723-7,795-2.82%$33.2613F
PRTAPROTHENA CORP PLC1.65%1,274,753$7,737,751-384,981-23.2%$6.0713F
IRONDISC MEDICINE INC1.64%145,691$7,715,795145,691New$52.9613F
ALGNALIGN TECHNOLOGY INC1.52%37,772$7,151,373No Change$189.3313F
GOSSGOSSAMER BIO INC1.5%5,739,013$7,058,986-537,880-8.57%$1.2313F
EHTHEHEALTH INC1.46%1,577,850$6,863,648-106,486-6.32%$4.3513F
ALKSALKERMES PLC1.35%221,021$6,323,411-492-0.22%$28.6113F
IOVAIOVANCE BIOTHERAPEUTICS INC1.25%3,429,329$5,898,446218,0156.79%$1.7213F
SNDXSYNDAX PHARMACEUTICALS INC0.89%444,367$4,161,497No Change$9.3713F
RNAAVIDITY BIOSCIENCES INC0.72%118,886$3,376,362118,886New$28.413F
DNLIDENALI THERAPEUTICS INC0.71%239,809$3,354,928239,809New$13.9913F
MIRMMIRUM PHARMACEUTICALS INC0.7%64,700$3,292,583No Change$50.8913F
EWEDWARDS LIFESCIENCES CORP0.66%39,473$3,087,183No Change$78.2113F
TSHATAYSHA GENE THERAPIES INC0.61%1,246,033$2,878,336-173,435-12.22%$2.3113F
BNTXBIONTECH SE-ADR0.57%25,206$2,683,683No Change$106.4713F
DYNDYNE THERAPEUTICS INC0.54%264,976$2,522,572-68,415-20.52%$9.5213F
CRSPCRISPR THERAPEUTICS AG0.46%44,625$2,170,56044,625New$48.6413F
ACRSACLARIS THERAPEUTICS INC0.42%1,390,028$1,973,840614,00079.12%$1.4213F
RAREULTRAGENYX PHARMACEUTICAL IN0.38%48,750$1,772,55048,750New$36.3613F
BCYCBICYCLE THERAPEUTICS PLC-ADR0.37%248,934$1,730,091No Change$6.9513F
NBIXNEUROCRINE BIOSCIENCES INC0.36%13,334$1,675,950No Change$125.6913F
TVTXTRAVERE THERAPEUTICS INC0.35%110,719$1,638,641No Change$14.813F
NUVBNUVATION BIO INC0.32%772,652$1,506,671No Change$1.9513F
STOKSTOKE THERAPEUTICS INC0.3%125,861$1,428,522No Change$11.3513F
PYXSPYXIS ONCOLOGY INC0.24%1,037,421$1,141,163No Change$1.113F
HUMHUMANA INC0.21%3,985$974,253No Change$244.4813F
ALDXALDEYRA THERAPEUTICS INC0.18%225,465$863,531No Change$3.8313F
KPTIKARYOPHARM THERAPEUTICS INC0.17%187,911$809,896187,911New$4.3113F
VYNEVYNE THERAPEUTICS INC PIPE0.16%445,434$734,966No Change$1.6513F
ABEOABEONA THERAPEUTICS INC0.13%108,865$618,353No Change$5.6813F
ALMSALUMIS INC0.09%143,437$430,311143,437New$313F
URGNUROGEN PHARMA LTD0.07%24,500$335,650No Change$13.713F
AKTXAKARI THERAPEUTICS PLC-ADR0.04%146,024$170,834No Change$1.1713F
GBIOGENERATION BIO CO0.01%150,475$48,167No Change$0.3213F
SLRNACELYRIN INC-1,792,895Exited13F
TILINSTIL BIO INC-11,165Exited13F
KPTIKARYOPHARM THERAPEUTICS INC-324,032Exited13F
RLMDRELMADA THERAPEUTICS INC-495,146Exited13F
SRPTSAREPTA THERAPEUTICS INC-210,258Exited13F
VERVVERVE THERAPEUTICS INC-575,817Exited13F