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Palo Alto Investors LP

Q3 2025 · Filed 2025-11-14
Market Value
$512M
+12.7%
Holdings
43
-2
New Purchases
3
Added To
12
Closed
4
Reduced
17
Top 10 Concentration
70.9%
Turnover
16.3%

Top Buys (by % of Portfolio)

SymbolCur %Prior %Chg %Value
PTCT 10.33% 4.37% +5.97% $53M
DYN 3.12% 0.55% +2.56% $16M
IOVA 3.23% 1.30% +1.93% $17M
RARE 2.17% 0.39% +1.78% $11M
IRON 2.89% 1.70% +1.20% $15M
FOLD 8.26% 7.07% +1.18% $42M
SNDX 1.97% 0.92% +1.05% $10M
CDNA 0.90% 0.00% +0.90% $5M
DNLI 1.16% 0.74% +0.42% $6M
NUVB 0.74% 0.33% +0.41% $4M
MIRM 0.93% 0.72% +0.20% $5M
PYXS 0.45% 0.25% +0.20% $2M
RNAM 0.93% 0.74% +0.19% $5M
STOK 0.48% 0.31% +0.17% $2M
TSHA 0.80% 0.63% +0.16% $4M

Top Sells (by % of Portfolio)

SymbolCur %Prior %Chg %Value
INSM 13.82% 19.15% -5.33% $71M
STAA 0.00% 2.92% -2.92% $0
ALNY 2.88% 5.42% -2.54% $15M
BMRN 7.97% 10.16% -2.19% $41M
ACAD 10.27% 12.16% -1.89% $53M
UTHR 4.76% 6.03% -1.27% $24M
BIIB 5.08% 5.68% -0.61% $26M
NVCR 3.17% 3.77% -0.60% $16M
ALGN 1.12% 1.57% -0.46% $6M
ALKS 1.08% 1.39% -0.31% $6M
BNTX 0.38% 0.59% -0.21% $2M
EHTH 1.30% 1.51% -0.21% $7M
KPTI 0.00% 0.18% -0.18% $0
EW 0.51% 0.68% -0.17% $3M
VYNE 0.00% 0.16% -0.16% $0

Sector Allocation Over Time

Market Cap Concentration

TierHoldingsValueWeight
Large Cap 11 $195M 38.1%
Mid Cap 13 $222M 43.3%
Small Cap 11 $82M 16.0%
Micro Cap 8 $13M 2.5%

Portfolio Analytics

Avg Market Cap
$8.2B
Median Market Cap
$3.2B
Avg P/E
62.0
Median P/E
36.0
Avg Dividend Yield
0.02%
Avg Beta
0.89
# Stocks
43
# ETFs / Funds
0

Top Holdings (43 total)

# Symbol % Port Shares Value Avg Price Q/Q Value Chg Share Chg Chg % Status
1 INSM 13.82% 491,805 $71M $144.01 -$16M -373,308 -43.1%
2 PTCT 10.33% 862,613 $53M $61.37 $33M +456,144 +112.2%
3 ACAD 10.27% 2,466,684 $53M $21.34 -$3M -96,525 -3.8%
4 FOLD 8.26% 5,367,798 $42M $7.88 $10M -242,715 -4.3%
5 BMRN 7.97% 754,007 $41M $54.16 -$5M -86,463 -10.3%
6 BIIB 5.08% 185,661 $26M $140.08 $166K -20,098 -9.8%
7 UTHR 4.76% 58,186 $24M $419.21 -$3M -37,296 -39.1%
8 ANAB 4.03% 673,520 $21M $30.62 $3M -139,301 -17.1%
9 IOVA 3.23% 7,618,132 $17M $2.17 $11M +4,188,803 +122.2%
10 NVCR 3.17% 1,256,159 $16M $12.92 -$901K +293,763 +30.5%
11 DYN 3.12% 1,262,674 $16M $12.65 $13M +997,698 +376.5%
12 IRON 2.89% 224,300 $15M $66.08 $7M +78,609 +54.0%
13 ALNY 2.88% 32,320 $15M $456.00 -$10M -43,215 -57.2%
14 RARE 2.17% 369,531 $11M $30.08 $9M +320,781 +658.0%
15 AGIO 2.08% 265,497 $11M $40.14 $2M -3,286 -1.2%
16 SNDX 1.97% 654,930 $10M $15.38 $6M +210,563 +47.4%
17 EHTH 1.30% 1,544,619 $7M $4.31 -$206K -33,231 -2.1%
18 DNLI 1.16% 408,006 $6M $14.52 $3M +168,197 +70.1%
19 ALGN 1.12% 45,735 $6M $125.22 -$1M +7,963 +21.1%
20 ALKS 1.08% 183,938 $6M $30.00 -$805K -37,083 -16.8%
21 RNAM 0.93% 109,831 $5M $43.57 $1M -9,055 -7.6%
22 MIRM 0.93% 64,700 $5M $73.31 $1M — —
23 CDNA 0.90% 316,204 $5M $14.54 — +316,204 — NEW
24 TSHA 0.80% 1,246,033 $4M $3.27 $1M — —
25 NUVB 0.74% 1,020,547 $4M $3.70 $2M +247,895 +32.1%
26 ACRS 0.58% 1,566,840 $3M $1.90 $1M +176,812 +12.7%
27 CRSP 0.52% 41,226 $3M $64.81 $501K -3,399 -7.6%
28 TVTX 0.52% 110,719 $3M $23.90 $1M — —
29 EW 0.51% 33,640 $3M $77.77 -$471K -5,833 -14.8%
30 NBIX 0.50% 18,117 $3M $140.38 $867K +4,783 +35.9%
31 STOK 0.48% 105,427 $2M $23.50 $1M -20,434 -16.2%
32 PYXS 0.45% 1,037,421 $2M $2.22 $1M — —
33 BNTX 0.38% 19,614 $2M $98.62 -$749K -5,592 -22.2%
34 BCYC 0.33% 221,071 $2M $7.74 -$19K -27,863 -11.2%
35 ALDX 0.23% 225,465 $1M $5.22 $313K — —
36 HUM 0.20% 3,985 $1M $260.17 $63K — —
37 ORKA 0.15% 59,985 $791K $13.19 — +59,985 — NEW
38 ABEO 0.11% 108,865 $575K $5.28 -$44K — —
39 PRQR 0.08% 188,807 $402K $2.13 — +188,807 — NEW
40 KPTI —% — — — -$810K -187,911 -100.0% SOLD
41 ALMS —% — — — -$430K -143,437 -100.0% SOLD
42 VYNE —% — — — -$735K -445,434 -100.0% SOLD
43 STAA —% — — — -$13M -791,879 -100.0% SOLD

New Positions

SymbolValue% Port
CDNA $5M 0.90%
ORKA $791K 0.15%
PRQR $402K 0.08%

Sold Out Positions

SymbolValue% Port
ALMS — —%
KPTI — —%
STAA — —%
VYNE — —%
View SEC EDGAR Filings for Palo Alto Investors LP →

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For informational purposes only. Not investment advice. Data sourced from SEC filings. Privacy Terms