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Asset Manager ← All Institutions

SPHERA FUNDS MANAGEMENT LTD.

Q1 2026 · Filed 2026-05-15
Market Value
$529M
+28.7%
Holdings
105
-8
New Purchases
19
Added To
26
Closed
20
Reduced
28
Top 10 Concentration
37.0%
Turnover
37.1%

Top Buys (by % of Portfolio)

SymbolCur %Prior %Chg %Value
MLYS 6.87% 3.97% +2.90% $36M
AZN 2.33% 0.00% +2.33% $12M
CLBT 1.65% 0.00% +1.65% $9M
PANW 1.60% 0.00% +1.60% $8M
RARE 3.21% 1.68% +1.52% $17M
ORA 1.45% 0.00% +1.45% $8M
BBIO 3.45% 2.01% +1.44% $18M
XENE 1.40% 0.00% +1.40% $7M
TSEM 4.84% 3.50% +1.34% $26M
AMZN 1.26% 0.00% +1.26% $7M
AAOI 1.17% 0.00% +1.17% $6M
BHVN 0.95% 0.00% +0.95% $5M
ZBIO 0.79% 0.00% +0.79% $4M
RLAY 0.77% 0.00% +0.77% $4M
PMN 0.78% 0.02% +0.76% $4M

Top Sells (by % of Portfolio)

SymbolCur %Prior %Chg %Value
ANNX 0.00% 1.61% -1.61% $0
DYN 0.55% 1.87% -1.32% $3M
ATXS 0.00% 1.13% -1.13% $0
SVRA 0.76% 1.73% -0.97% $4M
AMD 0.00% 0.94% -0.94% $0
CYTK 0.50% 1.42% -0.92% $3M
IMTX 1.30% 2.20% -0.91% $7M
SEDG 0.51% 1.38% -0.87% $3M
BIIB 3.21% 4.06% -0.85% $17M
TARA 0.00% 0.84% -0.84% $0
AVGO 0.00% 0.82% -0.82% $0
SRRK 0.88% 1.70% -0.82% $5M
LLY 1.57% 2.37% -0.79% $8M
ESLT 0.00% 0.75% -0.75% $0
HELP 0.90% 1.64% -0.75% $5M

Sector Allocation Over Time

Market Cap Concentration

TierHoldingsValueWeight
Mega Cap 11 $64M 12.0%
Large Cap 14 $135M 25.5%
Mid Cap 28 $183M 34.7%
Small Cap 28 $114M 21.5%
Micro Cap 24 $33M 6.3%

Portfolio Analytics

Avg Market Cap
$95.8B
Median Market Cap
$2.0B
Avg P/E
50.8
Median P/E
36.7
Avg Dividend Yield
0.01%
Avg Beta
0.92
# Stocks
104
# ETFs / Funds
1

Top Holdings (105 total)

# Symbol % Port Shares Value Avg Price Q/Q Value Chg Share Chg Chg % Status
1 MLYS 6.87% 1,339,971 $36M $27.09 $20M +890,968 +198.4%
2 TSEM 4.84% 145,735 $26M $175.48 $11M +23,222 +18.9%
3 NVMI 4.38% 53,366 $23M $434.28 $7M +5,520 +11.5%
4 BBIO 3.45% 245,246 $18M $74.26 $10M +137,500 +127.6%
5 BIIB 3.21% 92,526 $17M $183.33 $290K -2,212 -2.3%
6 RARE 3.21% 809,333 $17M $20.95 $10M +508,710 +169.2%
7 SNDX 3.20% 724,563 $17M $23.36 $904K -38,000 -5.0%
8 COGT 3.03% 416,340 $16M $38.49 $3M +37,840 +10.0%
9 SNY 2.46% 269,515 $13M $48.18 $1M +30,000 +12.5%
10 AZN 2.33% 62,530 $12M $197.22 — +62,530 — NEW
11 FOLD 1.65% 603,377 $9M $14.46 -$650K -55,000 -8.3%
12 CLBT 1.65% 631,521 $9M $13.78 — +631,521 — NEW
13 APLS 1.64% 214,914 $9M $40.23 $2M -36,047 -14.4%
14 PANW 1.60% 52,800 $8M $160.32 — +52,800 — NEW
15 LLY 1.57% 9,040 $8M $919.77 -$1M — —
16 BCRX 1.56% 866,464 $8M $9.52 $2M +28,575 +3.4%
17 CAMT 1.52% 53,020 $8M $151.61 $4M +13,522 +34.2%
18 BMRN 1.50% 139,900 $8M $56.49 -$833K -7,100 -4.8%
19 CLDX 1.46% 243,575 $8M $31.72 $1M +3,811 +1.6%
20 ORA 1.45% 68,250 $8M $111.92 — +68,250 — NEW
21 XENE 1.40% 127,000 $7M $58.15 — +127,000 — NEW
22 SLNO 1.37% 216,281 $7M $33.48 $930K +79,967 +58.7%
23 TNGX 1.36% 343,563 $7M $20.92 $2M -201,000 -36.9%
24 JNJ 1.33% 28,831 $7M $244.44 -$368K -7,000 -19.5%
25 IMTX 1.30% 696,105 $7M $9.84 -$2M -165,000 -19.2%
26 TRVI 1.30% 574,029 $7M $11.93 -$645K -24,505 -4.1%
27 ORIC 1.29% 537,628 $7M $12.67 -$1M -466,750 -46.5%
28 MAZE 1.28% 227,343 $7M $29.85 $4M +155,500 +216.4%
29 GSK 1.27% 122,000 $7M $55.19 $750K — —
30 AMZN 1.26% 31,940 $7M $208.27 — +31,940 — NEW
31 ABBV 1.24% 30,256 $7M $217.49 $810K +5,000 +19.8%
32 AAOI 1.17% 73,400 $6M $84.59 — +73,400 — NEW
33 ELVN 1.14% 153,265 $6M $39.20 $3M -73,500 -32.4%
34 MRK 1.11% 48,600 $6M $120.29 $730K — —
35 VOR 1.09% 321,917 $6M $17.84 $375K -88,500 -21.6%
36 ACAD 1.08% 256,202 $6M $22.26 $35K +44,000 +20.7%
37 NVS 1.07% 37,000 $6M $152.75 $551K — —
38 ELDN 1.03% 1,772,131 $5M $3.08 $2M -360,000 -16.9%
39 ENPH 1.02% 142,419 $5M $37.81 -$592K -44,081 -23.6%
40 RVMD 1.01% 55,110 $5M $97.25 $1M +2,610 +5.0%
41 PFE 0.99% 186,000 $5M $28.08 $3M +100,000 +116.3%
42 BHVN 0.95% 594,000 $5M $8.46 — +594,000 — NEW
43 FBRX 0.91% 184,984 $5M $25.90 -$278K -885 -0.5%
44 HELP 0.90% 987,090 $5M $4.80 -$2M +161,514 +19.6%
45 MDGL 0.90% 9,040 $5M $523.47 $3M +5,740 +173.9%
46 SRRK 0.88% 94,265 $5M $49.16 -$2M -64,000 -40.4%
47 NVO 0.84% 120,677 $4M $36.75 -$1M +5,000 +4.3%
48 KOD 0.83% 114,796 $4M $38.12 -$531K -60,704 -34.6%
49 ZBIO 0.79% 214,334 $4M $19.55 — +214,334 — NEW
50 PMN 0.78% 325,591 $4M $12.70 $4M +313,784 +2657.6%
51 RLAY 0.77% 408,436 $4M $9.95 — +408,436 — NEW
52 SVRA 0.76% 739,164 $4M $5.46 -$3M -439,000 -37.3%
53 CRVS 0.69% 247,961 $4M $14.63 $488K -159,748 -39.2%
54 OVID 0.68% 1,622,828 $4M $2.22 — +1,622,828 — NEW
55 IRON 0.65% 53,538 $3M $63.94 — +53,538 — NEW
56 UPB 0.61% 358,000 $3M $9.00 — +358,000 — NEW
57 ACOG 0.59% 567,616 $3M $5.49 -$573K — —
58 PALI 0.57% 1,733,471 $3M $1.75 $3M +1,549,371 +841.6%
59 DYN 0.55% 160,594 $3M $18.13 -$5M -232,300 -59.1%
60 CLYM 0.54% 419,247 $3M $6.85 -$857K -513,000 -55.0%
61 ZIM 0.53% 105,950 $3M $26.35 -$96K -30,055 -22.1%
62 MSLE 0.52% 489,207 $3M $5.63 — +489,207 — NEW
63 SEDG 0.51% 52,836 $3M $51.05 -$3M -143,700 -73.1%
64 AMGN 0.50% 7,500 $3M $351.85 $184K — —
65 CYTK 0.50% 39,817 $3M $65.91 -$3M -51,900 -56.6%
66 GPCR 0.46% 50,800 $2M $48.20 -$403K +9,800 +23.9%
67 KURA 0.45% 295,522 $2M $8.13 -$668K — —
68 GENB 0.44% 185,000 $2M $12.50 — +185,000 — NEW
69 IBIT 0.43% 59,505 $2M $38.42 $794K +29,450 +98.0%
70 CTNM 0.43% 173,475 $2M $13.06 $283K — —
71 TENX 0.41% 136,015 $2M $15.99 -$143K -54,096 -28.4%
72 PRLD 0.36% 558,339 $2M $3.42 $2M +435,587 +354.9%
73 VSTM 0.34% 343,678 $2M $5.30 -$832K — —
74 VYGR 0.34% 469,761 $2M $3.86 $478K +130,000 +38.3%
75 STTK 0.34% 280,786 $2M $6.43 $1M +85,574 +43.8%
76 EVMN 0.34% 78,234 $2M $22.99 -$1M -87,913 -52.9%
77 BIOA 0.29% 86,518 $2M $17.49 -$2M -156,517 -64.4%
78 ORGO 0.25% 550,000 $1M $2.37 — +550,000 — NEW
79 BMY 0.20% 17,500 $1M $60.65 $117K — —
80 CTMX 0.20% 220,000 $1M $4.70 — +220,000 — NEW
81 NICE 0.12% 5,611 $619K $110.26 — +5,611 — NEW
82 HOWL 0.10% 626,810 $522K $0.83 $125K — —
83 DTIL 0.04% 40,000 $220K $5.50 -$1M -356,116 -89.9%
84 APRE 0.04% 270,000 $206K $0.76 -$24K — —
85 FHTX 0.01% 12,224 $58K $4.78 — +12,224 — NEW
86 TSHA —% — — — -$2M -368,146 -100.0% SOLD
87 JSPR —% — — — -$888K -485,401 -100.0% SOLD
88 AVGO —% — — — -$3M -9,755 -100.0% SOLD
89 MREO —% — — — -$106K -255,400 -100.0% SOLD
90 ANNX —% — — — -$7M -1,316,212 -100.0% SOLD
91 OKUR —% — — — -$175K -60,454 -100.0% SOLD
92 CATX —% — — — -$962K -349,973 -100.0% SOLD
93 APLT —% — — — -$5K -50,000 -100.0% SOLD
94 TRDA —% — — — -$1M -110,942 -100.0% SOLD
95 JANX —% — — — -$2M -157,840 -100.0% SOLD
96 PEPG —% — — — -$791K -121,467 -100.0% SOLD
97 TNYA —% — — — -$1M -1,500,000 -100.0% SOLD
98 TARA —% — — — -$3M -650,000 -100.0% SOLD
99 VRNS —% — — — -$2M -52,500 -100.0% SOLD
100 NRIX —% — — — -$2M -124,000 -100.0% SOLD

Options Breakdown

6 Calls $23M Call Value 1 Puts $26M Put Value 1.13 P/C Ratio

Top Calls

SymbolSharesValueStatus
CYTK 259,300 $17M NEW
TLT 47,000 $4M
OLMA 100,000 $1M NEW
RARE — $0 SOLD
PRAX — $0 SOLD
NICE — $0 SOLD

Top Puts

SymbolSharesValueStatus
XBI 200,000 $26M

New Positions

SymbolValue% Port
AZN $12M 2.33%
CLBT $9M 1.65%
PANW $8M 1.60%
ORA $8M 1.45%
XENE $7M 1.40%
AMZN $7M 1.26%
AAOI $6M 1.17%
BHVN $5M 0.95%
ZBIO $4M 0.79%
RLAY $4M 0.77%
OVID $4M 0.68%
IRON $3M 0.65%
UPB $3M 0.61%
MSLE $3M 0.52%
GENB $2M 0.44%

Sold Out Positions

SymbolValue% Port
AMD — —%
ESLT — —%
ANNX — —%
AVGO — —%
MREO — —%
JSPR — —%
JANX — —%
CATX — —%
OKUR — —%
TNYA — —%
TARA — —%
TSHA — —%
VRNS — —%
TRDA — —%
PEPG — —%
View SEC EDGAR Filings for SPHERA FUNDS MANAGEMENT LTD. →

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