Palo Alto Investors LP Long-Term Concentrated

Location: Palo Alto, CA

CIK: 0001306923 · Show all filings

Period: Q4 2025 (← Previous) (Next →)

Filing Date: Feb 17, 2026

Total Value: $718M (100.0% shares, 0.0% debt)

Holdings (49)

INSM INSMED INC 11.9%
Value $85.19M Shares 489,482 Share Price $174.04 * Est. Cost/Share $17.79 Unrealized @ Report Date +925.7%
FOLD AMICUS THERAPEUTICS INC 10.3%
Value $74.13M Shares 5,205,767 Share Price $14.24 * Est. Cost/Share $9.63 Unrealized @ Report Date +2.1%
PTCT PTC THERAPEUTICS INC 9.6%
Value $68.66M Shares 903,916 Share Price $75.96 * Est. Cost/Share $46.25 Unrealized @ Report Date +57.1%
ACAD ACADIA PHARMACEUTICALS INC 9.2%
Value $66.35M Shares 2,484,031 Share Price $26.71 * Est. Cost/Share $26.96 Unrealized @ Report Date -11.4%
BMRN BIOMARIN PHARMACEUTICAL INC 6.2%
Value $44.35M Shares 746,256 Share Price $59.43 * Est. Cost/Share $83.16 Unrealized @ Report Date -34.5%
ANAB ANAPTYSBIO INC 4.7%
Value $33.45M Shares 690,032 Share Price $48.48 * Est. Cost/Share $19.77 Unrealized @ Report Date +97.2%
BIIB BIOGEN INC 4.5%
Value $32.31M Shares 183,571 Share Price $175.99 * Est. Cost/Share $256.18 Unrealized @ Report Date -36.2%
DYN DYNE THERAPEUTICS INC 4.0%
Value $28.8M Shares 1,472,197 Share Price $19.56 * Est. Cost/Share $13.00 Unrealized @ Report Date +45.7%
UTHR UNITED THERAPEUTICS CORP 3.9%
Value $28.35M Shares 58,186 Share Price $487.25 * Est. Cost/Share $89.23 Unrealized @ Report Date +421.9%
IRON DISC MEDICINE INC 3.5%
Value $25.21M Shares 317,456 Share Price $79.41 * Est. Cost/Share $61.08 Unrealized @ Report Date +38.3%
IOVA IOVANCE BIOTHERAPEUTICS INC 2.7%
Value $19.43M Shares 7,116,676 Share Price $2.73 * Est. Cost/Share $4.09 Unrealized @ Report Date -43.4%
NVCR NOVOCURE LTD 2.3%
Value $16.8M Shares 1,298,964 Share Price $12.93 Est. Cost/Share $34.92 Unrealized @ Report Date -63.2%
SNDX SYNDAX PHARMACEUTICALS INC 2.3%
Value $16.69M Shares 794,507 Share Price $21.01 * Est. Cost/Share $15.82 Unrealized @ Report Date +10.3%
GOSS GOSSAMER BIO INC 1.9%
Value $13.86M Shares 4,471,592 Share Price $3.10 * Est. Cost/Share $1.58 Unrealized @ Report Date +80.7%
CMPX COMPASS THERAPEUTICS INC 1.9%
Value $13.6M Shares 2,532,419 Share Price $5.37 * Est. Cost/Share $4.62 Unrealized @ Report Date 0.0%
PRTA PROTHENA CORP PLC 1.8%
Value $12.61M Shares 1,320,510 Share Price $9.55 * Est. Cost/Share $20.95 Unrealized @ Report Date -51.4%
MIRM MIRUM PHARMACEUTICALS INC 1.7%
Value $12.36M Shares 156,421 Share Price $78.99 * Est. Cost/Share $48.52 Unrealized @ Report Date +47.9%
ANNX ANNEXON INC 1.7%
Value $11.97M Shares 2,384,192 Share Price $5.02 * Est. Cost/Share $3.82 Unrealized @ Report Date 0.0%
RARE ULTRAGENYX PHARMACEUTICAL IN 1.5%
Value $10.61M Shares 461,294 Share Price $23.00 * Est. Cost/Share $31.21 Unrealized @ Report Date +5.4%
DNLI DENALI THERAPEUTICS INC 1.5%
Value $10.59M Shares 641,239 Share Price $16.51 * Est. Cost/Share $15.17 Unrealized @ Report Date +11.3%
CDNA CAREDX INC 1.3%
Value $9.01M Shares 478,220 Share Price $18.84 * Est. Cost/Share $15.10 Unrealized @ Report Date +10.9%
EHTH EHEALTH INC 1.0%
Value $7.045M Shares 1,531,429 Share Price $4.60 * Est. Cost/Share $38.13 Unrealized @ Report Date -88.4%
ALKS ALKERMES PLC 0.9%
Value $6.787M Shares 242,560 Share Price $27.98 * Est. Cost/Share $24.20 Unrealized @ Report Date +23.8%
CAPR CAPRICOR THERAPEUTICS INC 0.9%
Value $6.531M Shares 226,304 Share Price $28.86 * Est. Cost/Share $13.06 Unrealized @ Report Date 0.0%
TSHA TAYSHA GENE THERAPIES INC 0.9%
Value $6.508M Shares 1,183,195 Share Price $5.50 * Est. Cost/Share $1.87 Unrealized @ Report Date +159.1%
ALGN ALIGN TECHNOLOGY INC 0.9%
Value $6.483M Shares 41,520 Share Price $156.15 * Est. Cost/Share $150.48 Unrealized @ Report Date -4.8%
AGIO AGIOS PHARMACEUTICALS INC 0.8%
Value $5.784M Shares 212,499 Share Price $27.22 * Est. Cost/Share $33.17 Unrealized @ Report Date +5.8%
BCAX BICARA THERAPEUTICS INC 0.7%
Value $5.025M Shares 298,575 Share Price $16.83 Est. Cost/Share $17.08 Unrealized @ Report Date 0.0%
NUVB NUVATION BIO INC 0.7%
Value $4.821M Shares 538,079 Share Price $8.96 * Est. Cost/Share $2.12 Unrealized @ Report Date +192.8%
ACRS ACLARIS THERAPEUTICS INC 0.7%
Value $4.716M Shares 1,566,840 Share Price $3.01 * Est. Cost/Share $1.44 Unrealized @ Report Date +75.3%
XENE XENON PHARMACEUTICALS INC 0.6%
Value $4.326M Shares 96,519 Share Price $44.82 * Est. Cost/Share $42.00 Unrealized @ Report Date 0.0%
TVTX TRAVERE THERAPEUTICS INC 0.6%
Value $4.231M Shares 110,719 Share Price $38.21 * Est. Cost/Share $23.56 Unrealized @ Report Date +38.0%
EW EDWARDS LIFESCIENCES CORP 0.4%
Value $2.868M Shares 33,640 Share Price $85.25 * Est. Cost/Share $72.66 Unrealized @ Report Date +13.0%
NBIX NEUROCRINE BIOSCIENCES INC 0.4%
Value $2.57M Shares 18,117 Share Price $141.83 * Est. Cost/Share $129.01 Unrealized @ Report Date +12.3%
STOK STOKE THERAPEUTICS INC 0.3%
Value $2.286M Shares 72,022 Share Price $31.74 * Est. Cost/Share $6.06 Unrealized @ Report Date +396.2%
CRSP CRISPR THERAPEUTICS AG 0.3%
Value $2.162M Shares 41,226 Share Price $52.44 * Est. Cost/Share $38.70 Unrealized @ Report Date +54.8%
BNTX BIONTECH SE-ADR 0.3%
Value $1.867M Shares 19,614 Share Price $95.20 Est. Cost/Share $118.77 Unrealized @ Report Date —
ORKA ORUKA THERAPEUTICS INC 0.3%
Value $1.818M Shares 59,985 Share Price $30.31 * Est. Cost/Share $14.82 Unrealized @ Report Date +88.0%
BCYC BICYCLE THERAPEUTICS PLC-ADR 0.2%
Value $1.565M Shares 221,071 Share Price $7.08 Est. Cost/Share $16.07 Unrealized @ Report Date —
PYXS PYXIS ONCOLOGY INC 0.2%
Value $1.193M Shares 1,037,421 Share Price $1.15 * Est. Cost/Share $2.98 Unrealized @ Report Date +18.2%
ALDX ALDEYRA THERAPEUTICS INC 0.2%
Value $1.168M Shares 225,465 Share Price $5.18 Est. Cost/Share $5.95 Unrealized @ Report Date -13.6%
HUM HUMANA INC 0.1%
Value $1.021M Shares 3,985 Share Price $256.13 * Est. Cost/Share $369.63 Unrealized @ Report Date -29.3%
INSP INSPIRE MEDICAL SYSTEMS INC 0.1%
Value $809K Shares 8,772 Share Price $92.23 * Est. Cost/Share $95.68 Unrealized @ Report Date 0.0%
CMPS COMPASS PATHWAYS PLC ADR 0.1%
Value $798K Shares 115,616 Share Price $6.90 Est. Cost/Share $6.90 Unrealized @ Report Date —
URGN UROGEN PHARMA LTD 0.1%
Value $574K Shares 24,500 Share Price $23.42 * Est. Cost/Share $27.01 Unrealized @ Report Date -19.7%
ABEO ABEONA THERAPEUTICS INC 0.1%
Value $574K Shares 108,865 Share Price $5.27 * Est. Cost/Share $6.04 Unrealized @ Report Date -16.7%
PRQR PROQR THERAPEUTICS NV 0.1%
Value $381K Shares 188,807 Share Price $2.02 * Est. Cost/Share $2.18 Unrealized @ Report Date +7.0%
— GENERATION BIO CO 0.0%
Value $85,467 Shares 15,047 Share Price $5.68 Est. Cost/Share $5.68 Unrealized @ Report Date —
AKTX AKARI THERAPEUTICS PLC-ADR 0.0%
Value $42,201 Shares 146,024 Share Price $0.29 Est. Cost/Share $1.22 Unrealized @ Report Date —