Palo Alto Investors LP Long-Term Concentrated

Location: Palo Alto, CA

CIK: 0001306923 · Show all filings

Period: Q2 2025 (← Previous) (Next →)

Filing Date: Aug 14, 2025

Total Value: $470M (100.0% shares, 0.0% debt)

Holdings (45)

INSM INSMED INC 18.5%
Value $87.06M Shares 865,113 Share Price $100.64 * Est. Cost/Share $17.79 Unrealized @ Report Date +329.8%
ACAD ACADIA PHARMACEUTICALS INC 11.8%
Value $55.29M Shares 2,563,209 Share Price $21.57 * Est. Cost/Share $26.96 Unrealized @ Report Date -31.1%
BMRN BIOMARIN PHARMACEUTICAL INC 9.8%
Value $46.2M Shares 840,470 Share Price $54.97 * Est. Cost/Share $83.16 Unrealized @ Report Date -29.2%
FOLD AMICUS THERAPEUTICS INC 6.8%
Value $32.15M Shares 5,610,513 Share Price $5.73 * Est. Cost/Share $9.63 Unrealized @ Report Date -33.0%
UTHR UNITED THERAPEUTICS CORP 5.8%
Value $27.44M Shares 95,482 Share Price $287.35 * Est. Cost/Share $89.23 Unrealized @ Report Date +234.9%
BIIB BIOGEN INC 5.5%
Value $25.84M Shares 205,759 Share Price $125.59 Est. Cost/Share $256.18 Unrealized @ Report Date -51.4%
ALNY ALNYLAM PHARMACEUTICALS INC 5.2%
Value $24.63M Shares 75,535 Share Price $326.09 * Est. Cost/Share $260.36 Unrealized @ Report Date +6.3%
PTCT PTC THERAPEUTICS INC 4.2%
Value $19.85M Shares 406,469 Share Price $48.84 * Est. Cost/Share $37.01 Unrealized @ Report Date +28.3%
ANAB ANAPTYSBIO INC 3.8%
Value $18.04M Shares 812,821 Share Price $22.20 * Est. Cost/Share $19.30 Unrealized @ Report Date +8.4%
NVCR NOVOCURE LTD 3.6%
Value $17.13M Shares 962,396 Share Price $17.80 * Est. Cost/Share $42.49 Unrealized @ Report Date -59.0%
STAA STAAR SURGICAL CO 2.8%
Value $13.29M Shares 791,879 Share Price $16.78 * Est. Cost/Share $21.88 Unrealized @ Report Date -19.4%
AGIO AGIOS PHARMACEUTICALS INC 1.9%
Value $8.94M Shares 268,783 Share Price $33.26 * Est. Cost/Share $33.17 Unrealized @ Report Date -8.6%
PRTA PROTHENA CORP PLC 1.6%
Value $7.738M Shares 1,274,753 Share Price $6.07 * Est. Cost/Share $21.46 Unrealized @ Report Date -65.0%
IRON DISC MEDICINE INC 1.6%
Value $7.716M Shares 145,691 Share Price $52.96 * Est. Cost/Share $46.97 Unrealized @ Report Date 0.0%
ALGN ALIGN TECHNOLOGY INC 1.5%
Value $7.151M Shares 37,772 Share Price $189.33 * Est. Cost/Share $149.18 Unrealized @ Report Date +18.4%
GOSS GOSSAMER BIO INC 1.5%
Value $7.059M Shares 5,739,013 Share Price $1.23 * Est. Cost/Share $1.58 Unrealized @ Report Date -30.9%
EHTH EHEALTH INC 1.5%
Value $6.864M Shares 1,577,850 Share Price $4.35 * Est. Cost/Share $38.13 Unrealized @ Report Date -86.8%
ALKS ALKERMES PLC 1.3%
Value $6.323M Shares 221,021 Share Price $28.61 * Est. Cost/Share $22.36 Unrealized @ Report Date +33.1%
IOVA IOVANCE BIOTHERAPEUTICS INC 1.3%
Value $5.898M Shares 3,429,329 Share Price $1.72 * Est. Cost/Share $6.20 Unrealized @ Report Date -59.9%
SNDX SYNDAX PHARMACEUTICALS INC 0.9%
Value $4.161M Shares 444,367 Share Price $9.37 * Est. Cost/Share $16.60 Unrealized @ Report Date -33.7%
RNAM AVIDITY BIOSCIENCES INC 0.7%
Value $3.376M Shares 118,886 Share Price $28.40 * Est. Cost/Share $29.81 Unrealized @ Report Date 0.0%
DNLI DENALI THERAPEUTICS INC 0.7%
Value $3.355M Shares 239,809 Share Price $13.99 Est. Cost/Share $14.07 Unrealized @ Report Date 0.0%
MIRM MIRUM PHARMACEUTICALS INC 0.7%
Value $3.293M Shares 64,700 Share Price $50.89 * Est. Cost/Share $15.56 Unrealized @ Report Date +186.2%
EW EDWARDS LIFESCIENCES CORP 0.7%
Value $3.087M Shares 39,473 Share Price $78.21 * Est. Cost/Share $72.66 Unrealized @ Report Date +2.6%
TSHA TAYSHA GENE THERAPIES INC 0.6%
Value $2.878M Shares 1,246,033 Share Price $2.31 * Est. Cost/Share $1.87 Unrealized @ Report Date +15.9%
BNTX BIONTECH SE-ADR 0.6%
Value $2.684M Shares 25,206 Share Price $106.47 Est. Cost/Share $118.77 Unrealized @ Report Date —
DYN DYNE THERAPEUTICS INC 0.5%
Value $2.523M Shares 264,976 Share Price $9.52 * Est. Cost/Share $14.30 Unrealized @ Report Date -23.0%
CRSP CRISPR THERAPEUTICS AG 0.5%
Value $2.171M Shares 44,625 Share Price $48.64 * Est. Cost/Share $38.70 Unrealized @ Report Date 0.0%
ACRS ACLARIS THERAPEUTICS INC 0.4%
Value $1.974M Shares 1,390,028 Share Price $1.42 * Est. Cost/Share $1.40 Unrealized @ Report Date -3.5%
RARE ULTRAGENYX PHARMACEUTICAL IN 0.4%
Value $1.773M Shares 48,750 Share Price $36.36 Est. Cost/Share $36.05 Unrealized @ Report Date 0.0%
BCYC BICYCLE THERAPEUTICS PLC-ADR 0.4%
Value $1.73M Shares 248,934 Share Price $6.95 Est. Cost/Share $16.07 Unrealized @ Report Date —
NBIX NEUROCRINE BIOSCIENCES INC 0.4%
Value $1.676M Shares 13,334 Share Price $125.69 * Est. Cost/Share $126.68 Unrealized @ Report Date -9.5%
TVTX TRAVERE THERAPEUTICS INC 0.3%
Value $1.639M Shares 110,719 Share Price $14.80 * Est. Cost/Share $23.56 Unrealized @ Report Date -29.6%
NUVB NUVATION BIO INC 0.3%
Value $1.507M Shares 772,652 Share Price $1.95 * Est. Cost/Share $1.92 Unrealized @ Report Date +8.5%
STOK STOKE THERAPEUTICS INC 0.3%
Value $1.429M Shares 125,861 Share Price $11.35 * Est. Cost/Share $6.06 Unrealized @ Report Date +56.7%
PYXS PYXIS ONCOLOGY INC 0.2%
Value $1.141M Shares 1,037,421 Share Price $1.10 Est. Cost/Share $2.98 Unrealized @ Report Date -62.3%
HUM HUMANA INC 0.2%
Value $974K Shares 3,985 Share Price $244.48 Est. Cost/Share $369.63 Unrealized @ Report Date -33.3%
ALDX ALDEYRA THERAPEUTICS INC 0.2%
Value $864K Shares 225,465 Share Price $3.83 * Est. Cost/Share $5.95 Unrealized @ Report Date -56.5%
KPTI KARYOPHARM THERAPEUTICS INC 0.2%
Value $810K Shares 187,911 Share Price $4.31 * Est. Cost/Share $4.91 Unrealized @ Report Date 0.0%
VYNE VYNE THERAPEUTICS INC PIPE 0.2%
Value $735K Shares 445,434 Share Price $1.65 * Est. Cost/Share $3.12 Unrealized @ Report Date -58.3%
ABEO ABEONA THERAPEUTICS INC 0.1%
Value $618K Shares 108,865 Share Price $5.68 Est. Cost/Share $6.04 Unrealized @ Report Date -5.8%
ALMS ALUMIS INC 0.1%
Value $430K Shares 143,437 Share Price $3.00 * Est. Cost/Share $4.72 Unrealized @ Report Date 0.0%
URGN UROGEN PHARMA LTD 0.1%
Value $336K Shares 24,500 Share Price $13.70 * Est. Cost/Share $27.01 Unrealized @ Report Date -64.5%
AKTX AKARI THERAPEUTICS PLC-ADR 0.0%
Value $171K Shares 146,024 Share Price $1.17 Est. Cost/Share $1.22 Unrealized @ Report Date —
— GENERATION BIO CO 0.0%
Value $48,167 Shares 150,475 Share Price $0.32 Est. Cost/Share $2.82 Unrealized @ Report Date —