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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: $723.72 M
Last 13-F Filed: Q2 2026
Concentration in top 10: 61.29%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
PTCTPTC THERAPEUTICS INC10.36%918,846$74,950,268-2,761-0.3%$81.5713F
ACADACADIA PHARMACEUTICALS INC10.01%2,864,096$72,461,629-8,599-0.3%$25.313F
INSMINSMED INC6.1%413,980$44,138,548-1,289-0.31%$106.6213F
ANABANAPTYSBIO INC5.63%603,489$40,735,508-34,672-5.43%$67.513F
BMRNBIOMARIN PHARMACEUTICAL INC5.4%682,777$39,068,500-2,405-0.35%$57.2213F
DYNDYNE THERAPEUTICS INC5.06%1,647,521$36,591,441-5,451-0.33%$22.2113F
UTHRUNITED THERAPEUTICS CORP4.69%62,587$33,911,514-222-0.35%$541.8313F
BIIBBIOGEN INC4.19%140,279$30,308,681-440-0.31%$216.0613F
IOVAIOVANCE BIOTHERAPEUTICS INC3.04%5,296,209$22,032,229-1,053,354-16.59%$4.1613F
PRTAPROTHENA CORP PLC1.55%1,143,155$11,191,487-65,413-5.41%$9.7913F
TVTXTRAVERE THERAPEUTICS INC1.32%167,525$9,517,095-62,928-27.31%$56.8113F
ALGNALIGN TECHNOLOGY INC0.73%31,389$5,294,069-10,131-24.4%$168.6613F
ORKAORUKA THERAPEUTICS INC - Restricted0.44%33,546$3,192,573-26,439-44.08%$95.1713F
PYXSPYXIS ONCOLOGY INC0.36%864,277$2,601,474-146,233-14.47%$3.0113F
NUVBNUVATION BIO INC0.26%326,609$1,855,139-182,237-35.81%$5.6813F