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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: $540.39 M
Last 13-F Filed: Q3 2025
Concentration in top 10: 67.24%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
INSMINSMED INC13.11%491,805$70,824,838-373,308-43.15%$144.0113F
ACADACADIA PHARMACEUTICALS INC9.74%2,466,684$52,639,037-96,525-3.77%$21.3413F
FOLDAMICUS THERAPEUTICS INC7.83%5,367,798$42,298,248-242,715-4.33%$7.8813F
BMRNBIOMARIN PHARMACEUTICAL INC7.56%754,007$40,837,019-86,463-10.29%$54.1613F
BIIBBIOGEN INC4.81%185,661$26,007,393-20,098-9.77%$140.0813F
UTHRUNITED THERAPEUTICS CORP4.51%58,186$24,392,153-37,296-39.06%$419.2113F
ANABANAPTYSBIO INC3.82%673,520$20,623,182-139,301-17.14%$30.6213F
ALNYALNYLAM PHARMACEUTICALS INC2.73%32,320$14,737,920-43,215-57.21%$45613F
GOSSGOSSAMER BIO INC2.66%5,464,349$14,371,238-274,664-4.79%$2.6313F
AGIOAGIOS PHARMACEUTICALS INC1.97%265,497$10,657,050-3,286-1.22%$40.1413F
EHTHEHEALTH INC1.23%1,544,619$6,657,308-33,231-2.11%$4.3113F
ALKSALKERMES PLC1.02%183,938$5,518,140-37,083-16.78%$3013F
RNAAVIDITY BIOSCIENCES INC0.89%109,831$4,785,337-9,055-7.62%$43.5713F
CRSPCRISPR THERAPEUTICS AG0.49%41,226$2,671,857-3,399-7.62%$64.8113F
EWEDWARDS LIFESCIENCES CORP0.48%33,640$2,616,183-5,833-14.78%$77.7713F
STOKSTOKE THERAPEUTICS INC0.46%105,427$2,477,535-20,434-16.24%$23.513F
BNTXBIONTECH SE-ADR0.36%19,614$1,934,333-5,592-22.19%$98.6213F
BCYCBICYCLE THERAPEUTICS PLC-ADR0.32%221,071$1,711,090-27,863-11.19%$7.7413F
GBIOGENERATION BIO CO0.02%15,047$92,088-135,428-90%$6.1213F