SPHERA FUNDS MANAGEMENT LTD.

CIK 1496201 · View on SEC EDGAR ↗

Portfolio value
$763.5M
#2,920 of 9,443 by 13F value · top 30.9%
Positions
105
As of
June 30, 2026

Portfolio value QoQ: +21.8% 13F does not disclose cash

Top 10 holdings weight
34.22%
Top 25 holdings weight
56.83%
Positions above 1%
33
Effective number of positions
50.4

Based on 13F long-equity holdings only (cash, bonds, shorts not disclosed)

Turnover Q2 2026: 28.55% Est. buys $229,338,464 · sells $198,502,670

Median holding: 3.0 quarters Tracked Q4 2024–Q2 2026 · 44.3% still held

New positions
27
Increased
33
Decreased
30
Closed
18

Put-notional exposure: 3.5% puts 13F reports option positions at underlying notional value — may include hedges, not necessarily bearish bets

On this page

Performance vs S&P 500

Tracked Q4 2024–Q2 2026
+89.3%
S&P 500 total return (same window)
+28.1%
Excess return
+61.2%

Annualized: +53.2% · S&P 500: +18.0%

Approximates a buy-and-hold portfolio built from quarterly SEC 13F snapshots. Excludes cash, short positions, options/derivatives, and non-13(f) securities — reflects the disclosed long-equity book only, not total fund AUM. SEC filing lag is up to 45 days; this is not a real-time-copyable timing.

Priceable coverage: 96.4% · Options excluded: 7.5%

Sector breakdown

Healthcare
82.6%
Technology
7.6%
Utilities
1.9%
Other/Unmapped
7.9%

Full portfolio 105 positions

Type Streak 8Q trend
TEVA Teva Pharmaceutical Industries Limited American Depositary Shares $47,773,578 6.26% 1,410,082 $16,238,691 Up ×2
MLYS Mineralys Therapeutics, Inc. - Common Stock $39,659,818 5.19% 1,469,971 $3,360,004 Up ×3
TSEM Tower Semiconductor Ltd. - Ordinary Shares $28,218,190 3.70% 108,265 $2,644,612 Down ×1
XBI XBI $23,737,500 3.11% 150,000 Put option $-1,808,501 Down ×1
SNDX Syndax Pharmaceuticals, Inc. - Common Stock $22,179,287 2.90% 1,014,606 $5,253,495 Up ×1
BIIB Biogen Inc. - Common Stock $21,606,000 2.83% 100,000 Call option Up ×1
BIIB Biogen Inc. - Common Stock $20,877,014 2.73% 96,626 $3,914,222 Up ×1
RARE Ultragenyx Pharmaceutical Inc. - Common Stock $19,649,815 2.57% 588,494 $2,694,289 Down ×1
BMRN BioMarin Pharmaceutical Inc. - Common Stock $18,799,631 2.46% 328,550 $10,896,680 Up ×1
CYTK Cytokinetics, Incorporated - Common Stock $18,740,693 2.45% 219,987 $16,116,355 Up ×1
BBIO BridgeBio Pharma, Inc. - Common Stock $18,273,370 2.39% 245,346 $61,402 Up ×3
COGT Cogent Biosciences, Inc. - Common Stock $17,776,458 2.33% 459,340 $1,751,531 Up ×3
NVMI Nova Ltd. - Ordinary Shares $13,665,257 1.79% 25,169 $-9,510,529 Down ×1
INSM Insmed Incorporated - Common Stock $12,666,456 1.66% 118,800 Up ×1
MAZE Maze Therapeutics, Inc. - Common Stock $12,460,110 1.63% 417,564 $5,673,921 Up ×2
AZN AstraZeneca PLC - American Depositary Shares $11,856,939 1.55% 62,530 $-475,228
SNY Sanofi - American Depositary Shares $11,497,510 1.51% 269,515 $-1,487,723
HELP Cybin Inc. - Common Stock $10,713,177 1.40% 1,620,753 $5,975,145 Up ×3
LLY Eli Lilly and Company Common Stock $9,643,417 1.26% 8,040 $1,328,696 Down ×1
MDGL Madrigal Pharmaceuticals, Inc. - Common Stock $9,353,132 1.23% 17,419 $4,620,963 Up ×2
TRVI Trevi Therapeutics, Inc. - Common Stock $9,306,891 1.22% 499,029 $2,458,725 Down ×4
ACAD ACADIA Pharmaceuticals Inc. - Common Stock $9,020,310 1.18% 356,534 $3,317,253 Up ×3
CLDX Celldex Therapeutics, Inc. - Common Stock $8,962,698 1.17% 240,868 $1,236,499 Down ×1
RYTM Rhythm Pharmaceuticals, Inc. - Common Stock $8,926,812 1.17% 80,400 Up ×1
CYTK Cytokinetics, Incorporated - Common Stock $8,519,000 1.12% 100,000 Call option $-8,571,464 Down ×1
ORIC Oric Pharmaceuticals, Inc. - Common Stock $8,154,806 1.07% 752,983 $1,343,059 Up ×1
LRCX Lam Research Corporation - Common Stock $8,003,605 1.05% 18,470 Up ×1
AMAT Applied Materials, Inc. - Common Stock $7,981,920 1.05% 11,040
TNGX Tango Therapeutics, Inc. - Common Stock $7,947,855 1.04% 254,250 $760,517 Down ×2
NVS Novartis AG Common Stock $7,832,904 1.03% 50,000 $2,181,154 Up ×1
Unknown issuer (CUSIP: 83417MAE4) $7,747,190 1.01% 4,000,000 $837,570
VOR Vor Biopharma Inc. - Common Stock $7,666,237 1.00% 416,417 $1,923,238 Up ×1
ABBV AbbVie Inc. Common Stock $7,613,620 1.00% 30,256 $1,033,243
MRK Merck & Company, Inc. Common Stock (new) $7,530,100 0.99% 58,600 $1,684,006 Up ×1
JNJ Johnson & Johnson Common Stock $7,322,209 0.96% 28,831 $274,759
IDYA IDEAYA Biosciences, Inc. - Common Stock $7,320,126 0.96% 196,408
IMTX Immatics N.V. - Ordinary Shares $7,294,177 0.96% 720,057 $444,504 Up ×1
NVCT Nuvectis Pharma, Inc. - Common Stock $7,042,359 0.92% 382,945 Up ×1
PFE Pfizer, Inc. Common Stock $6,886,880 0.90% 286,000 $1,664,000 Up ×2
HRMY Harmony Biosciences Holdings, Inc. - Common Stock $6,432,300 0.84% 176,663 Up ×1
XENE Xenon Pharmaceuticals Inc. - Common Shares $6,337,800 0.83% 105,000 $-1,047,250 Down ×1
CLYM Climb Bio, Inc. - Common Stock $6,308,061 0.83% 483,747 $3,436,219 Up ×1
ZBIO Zenas BioPharma, Inc. - Common Stock $5,858,567 0.77% 230,834 $1,668,337 Up ×1
NVO Novo Nordisk A/S Common Stock $5,785,255 0.76% 120,677 $1,350,375
ELVN Enliven Therapeutics, Inc. - Common Stock $5,722,824 0.75% 112,765 $-285,164 Down ×2
PRLD Prelude Therapeutics Incorporated - Common Stock $5,435,705 0.71% 1,019,832 $3,526,186 Up ×2
GSK GSK plc American Depositary Shares (Each representing two Ordinary Shares) $5,346,840 0.70% 102,000 $-1,386,340 Down ×1
FBRX Forte Biosciences, Inc. - Common Stock $5,305,976 0.69% 249,693 $514,890 Up ×1
BIOA BioAge Labs, Inc. - Common Stock $5,237,076 0.69% 213,671 $3,723,876 Up ×1
SRRK Scholar Rock Holding Corporation - Common Stock $5,184,575 0.68% 94,265 $550,508
MSLE Satellos Bioscience Inc. - Common Stock $5,073,887 0.66% 652,590 $2,319,652 Up ×1
PALI Palisade Bio, Inc. - Common Stock $4,717,352 0.62% 2,257,106 $1,683,778 Up ×2
ELDN Eledon Pharmaceuticals, Inc. - Common Stock $4,693,277 0.61% 1,191,187 $-764,886 Down ×2
VST Vistra Corp. Common Stock $4,671,654 0.61% 29,450 Up ×1
TLN Talen Energy Corporation - Common Stock $4,662,995 0.61% 12,135 Up ×1
SVRA Savara, Inc. - Common Stock $4,657,970 0.61% 756,164 $622,135 Up ×1
IRON Disc Medicine, Inc. - Common Stock $4,647,169 0.61% 63,538 $1,223,949 Up ×1
CLOU Global X Cloud Computing ETF $4,454,766 0.58% 195,900 Up ×1
DYN Dyne Therapeutics, Inc. - Common Stock $4,432,983 0.58% 199,594 $1,521,414 Up ×1
RLAY Relay Therapeutics, Inc. - Common Stock $4,375,072 0.57% 233,836 $311,134 Down ×1
AVTX Avalo Therapeutics, Inc. - Common Stock $4,292,793 0.56% 232,294 Up ×1
PMN ProMIS Neurosciences Inc. - Common Shares $4,284,784 0.56% 325,591 $149,772
BCRX BioCryst Pharmaceuticals, Inc. - Common Stock $4,220,510 0.55% 422,051 $-4,028,227 Down ×1
RVMD Revolution Medicines, Inc. - Common Stock $4,195,072 0.55% 22,400 $-1,164,376 Down ×1
PRAX Praxis Precision Medicines, Inc. - Common Stock $4,184,875 0.55% 12,500 Call option
CABA Cabaletta Bio, Inc. - Common Stock $4,133,227 0.54% 1,329,012 Up ×1
Unknown issuer (CUSIP: 370920100) $4,133,150 0.54% 245,000 $1,820,650 Up ×1
TLT iShares 20+ Year Treasury Bond ETF $4,061,740 0.53% 47,000 Call option $-12,690
MDWD MediWound Ltd. - Ordinary Shares $4,015,922 0.53% 273,192 $-385,201
ACOG Alpha Cognition Inc. - Common Stock $3,940,792 0.52% 545,816 $824,580 Down ×1
WVE Wave Life Sciences Ltd. - Ordinary Shares $3,708,360 0.49% 638,272 $-266,612 Up ×3
CRVS Corvus Pharmaceuticals, Inc. - Common Stock $3,659,717 0.48% 244,961 $32,048 Down ×2
OVID Ovid Therapeutics Inc. - Common Stock $3,639,570 0.48% 1,353,000 $36,892 Down ×1
BBOT BridgeBio Oncology Therapeutics, Inc. - Common Stock $3,512,706 0.46% 460,985 Up ×1
CTMX CytomX Therapeutics, Inc. - Common Stock $3,296,250 0.43% 879,000 $2,262,250 Up ×1
PRQR ProQR Therapeutics N.V. - Ordinary Shares $3,268,872 0.43% 1,757,458 Up ×1
ALNY Alnylam Pharmaceuticals, Inc. - Common Stock $3,251,124 0.43% 10,800 Up ×1
KURA Kura Oncology, Inc. - Common Stock $3,236,578 0.42% 295,039 $833,984 Down ×1
KOD Kodiak Sciences Inc - Common Stock $3,186,772 0.42% 81,796 $-1,189,252 Down ×2
ORA Ormat Technologies, Inc. Common Stock $3,050,834 0.40% 28,015 $-4,587,706 Down ×1
CTNM Contineum Therapeutics, Inc. - Common stock $3,007,155 0.39% 183,475 $741,571 Up ×1
LRMR Larimar Therapeutics, Inc. - Common Stock $2,824,312 0.37% 926,004
IMMX Immix Biopharma, Inc. - Common Stock $2,783,700 0.36% 270,000 Up ×1
AMGN Amgen Inc. - Common Stock $2,715,900 0.36% 7,500 $77,025
ABVX Abivax SA - American Depositary Shares $2,665,200 0.35% 20,000 Put option Up ×1
BHVN Biohaven Ltd. Common Shares $2,446,823 0.32% 164,437 $-2,578,417 Down ×1
CEG Constellation Energy Corporation - Common Stock When-Issued $2,446,445 0.32% 9,850 Up ×1
VSTM Verastem, Inc. - Common Stock $2,416,654 0.32% 632,632 $595,161 Up ×1
TENX Tenax Therapeutics, Inc. - Common Stock $1,856,580 0.24% 127,600 Call option Up ×1
TENX Tenax Therapeutics, Inc. - Common Stock $1,748,910 0.23% 120,200 $-425,970 Down ×2
TSHA Taysha Gene Therapies, Inc. - Common Stock $1,702,500 0.22% 250,000
GPCR Structure Therapeutics Inc. - American Depositary Shares $1,534,962 0.20% 28,600 $-913,598 Down ×1
UPB Upstream Bio, Inc. - Common Stock $1,520,324 0.20% 219,700 $-1,701,676 Down ×1
VYGR Voyager Therapeutics, Inc. - Common Stock $1,496,439 0.20% 427,554 $-316,838 Down ×1
ORGO Organogenesis Holdings Inc. - Class A $1,336,500 0.18% 550,000 $33,000
IKT Inhibikase Therapeutics, Inc. - Common Stock $1,318,097 0.17% 649,309 Up ×1
ORIC Oric Pharmaceuticals, Inc. - Common Stock $1,083,000 0.14% 100,000 Call option Up ×1
CRIS Curis, Inc. - Common Stock $1,033,717 0.14% 98,996 $-58,112 Down ×1
STTK Shattuck Labs, Inc. - Common Stock $600,039 0.08% 86,461 $-1,205,415 Down ×1
Unknown issuer (CUSIP: 337185102) $560,865 0.07% 27,876 Up ×1

Conviction holdings

Positions increased for 3+ consecutive quarters.

Share counts are as reported in 13F filings (not split-adjusted)

Security Value % of portfolio Streak
MLYS $39,659,818 5.19% up ×3
BBIO $18,273,370 2.39% up ×3
COGT $17,776,458 2.33% up ×3
HELP $10,713,177 1.40% up ×3
ACAD $9,020,310 1.18% up ×3
WVE $3,708,360 0.49% up ×3

Biggest new bets

New positions opened this quarter, largest first.

Security Value Shares % of portfolio
BIIB $21,606,000 100,000 2.83%
INSM $12,666,456 118,800 1.66%
RYTM $8,926,812 80,400 1.17%
LRCX $8,003,605 18,470 1.05%
AMAT $7,981,920 11,040 1.05%
IDYA $7,320,126 196,408 0.96%
NVCT $7,042,359 382,945 0.92%
HRMY $6,432,300 176,663 0.84%
VST $4,671,654 29,450 0.61%
TLN $4,662,995 12,135 0.61%
CLOU $4,454,766 195,900 0.58%
AVTX $4,292,793 232,294 0.56%
PRAX $4,184,875 12,500 0.55%
CABA $4,133,227 1,329,012 0.54%
BBOT $3,512,706 460,985 0.46%

Top movers (QoQ)

Security Action Shares Δ Value Δ
TEVA Bought more +363K +$16.2M
BMRN Bought more +189K +$10.9M
NVMI Trimmed -28K -$9.5M
CYTK Trimmed -159K -$8.6M
HELP Bought more +634K +$6.0M
MAZE Bought more +190K +$5.7M
SNDX Bought more +290K +$5.3M
MDGL Bought more +8K +$4.6M
ORA Trimmed -40K -$4.6M
BCRX Trimmed -444K -$4.0M

1 position hidden (data completeness check)

Exited positions

Includes corporate events (mergers, delistings) — not all exits are sells

Closed positions reflect 13F reporting changes; for index managers these are often mechanical (delisting, M&A, index rebalancing), not active decisions.

SecurityQuarter Shares before Value before Price since exit
CDTX Dec. 31, 2025 175,743 $16,829,150 No longer tracked
XBI Sept. 30, 2025 200,000 $16,586,000 No longer tracked
MRUS Dec. 31, 2025 150,000 $14,122,500 No longer tracked
QQQ Dec. 31, 2025 22,960 $13,784,495
PRAX March 31, 2026 40,000 $11,789,600 17.6%
FOLD June 30, 2026 603,377 $8,724,831 No longer tracked
CLBT June 30, 2026 631,521 $8,702,359 -23.6%
APLS June 30, 2026 214,914 $8,645,990 No longer tracked
NVDA Sept. 30, 2025 54,515 $8,612,825 17.5%
PANW June 30, 2026 52,800 $8,464,896 4.3%
CAMT June 30, 2026 53,020 $8,038,362 -7.4%
SLNO June 30, 2026 216,281 $7,241,088 No longer tracked
AMZN June 30, 2026 31,940 $6,652,144 10.3%
ANNX March 31, 2026 1,316,212 $6,607,384 -3.9%
AAOI June 30, 2026 73,400 $6,208,906 -17.3%
MSFT Sept. 30, 2025 11,792 $5,865,459 -6.7%
QURE Dec. 31, 2025 99,900 $5,831,163 100.2%
CLBT Dec. 31, 2025 298,948 $5,539,506 -38.2%
ENPH June 30, 2026 142,419 $5,384,862 -22.1%
ACAD March 31, 2025 288,539 $5,294,691 79.3%
NICE June 30, 2025 33,303 $5,134,324 -40.4%
RAPP Dec. 31, 2025 157,533 $4,678,730 60.3%
ATXS March 31, 2026 355,725 $4,656,440 No longer tracked
MRUS June 30, 2025 106,532 $4,483,932 No longer tracked
IMVT Dec. 31, 2025 256,743 $4,138,697 74.2%
PLRX March 31, 2025 297,362 $3,916,258 -13.3%
AMD March 31, 2026 18,040 $3,863,446 129.1%
RNA Sept. 30, 2025 126,000 $3,578,400 -68.7%
TARA March 31, 2026 650,000 $3,464,500 -25.0%
ENPH March 31, 2025 50,198 $3,447,599 -38.2%
ENGN Dec. 31, 2025 504,409 $3,445,113 -80.0%
RZLT Dec. 31, 2025 363,947 $3,421,102 97.5%
AVGO March 31, 2026 9,755 $3,376,206 17.7%
AMAT Sept. 30, 2025 18,000 $3,295,260 141.3%
ESLT March 31, 2026 5,340 $3,084,971 -11.8%
AMZN Dec. 31, 2025 13,760 $3,021,283 13.9%
ROIV Dec. 31, 2025 194,171 $2,937,807 70.7%
SRPT Dec. 31, 2025 150,000 $2,890,500 -11.0%
META Dec. 31, 2025 3,924 $2,881,707 -17.2%
VIGL June 30, 2025 1,604,429 $2,855,884 No longer tracked
UBER Sept. 30, 2025 30,000 $2,799,000 -18.7%
ZIM June 30, 2026 105,950 $2,791,783 4.1%
ORA Dec. 31, 2025 29,000 $2,791,250 -0.7%
IDYA Dec. 31, 2025 100,000 $2,721,000 10.3%
SEDG June 30, 2026 52,836 $2,697,278 -45.1%
PANW Sept. 30, 2025 13,114 $2,683,649 74.7%
WIX Sept. 30, 2025 16,931 $2,682,886 -56.2%
CRGX March 31, 2025 179,674 $2,590,899 No longer tracked
CGEM March 31, 2025 205,000 $2,496,900 187.5%
TVTX Dec. 31, 2025 101,800 $2,433,020 69.7%
NRIX March 31, 2026 124,000 $2,352,280 74.0%
WDAY June 30, 2025 10,000 $2,335,300 -17.7%
SWTX June 30, 2025 52,009 $2,295,157 No longer tracked
IBIT June 30, 2026 59,505 $2,286,182
JANX March 31, 2026 157,840 $2,178,192 25.1%
CEVA Dec. 31, 2025 81,085 $2,141,455 37.4%
GOOG June 30, 2025 13,500 $2,109,105 91.7%
SRRK Sept. 30, 2025 57,497 $2,036,544 48.8%
TSHA March 31, 2026 368,146 $2,024,803 36.5%
VKTX June 30, 2025 83,270 $2,010,971 30.4%
AVGO June 30, 2025 11,695 $1,958,094 32.1%
IONS June 30, 2025 63,821 $1,925,480 50.5%
NKE June 30, 2025 30,050 $1,907,574 -42.9%
CHKP June 30, 2025 8,334 $1,899,485 -40.0%
CRM Sept. 30, 2025 6,800 $1,854,292 -13.2%
ASND June 30, 2026 8,000 $1,829,840 -2.8%
TECX Dec. 31, 2025 115,908 $1,818,597 73.4%
RCKT June 30, 2025 271,792 $1,812,853 43.9%
PCVX Dec. 31, 2025 50,000 $1,801,000 33.5%
PHVS March 31, 2026 63,953 $1,774,696 29.3%
IMNM Dec. 31, 2025 147,200 $1,723,712 33.1%
VRNS March 31, 2026 52,500 $1,722,000 94.7%
MIST Dec. 31, 2025 820,000 $1,640,000 -45.8%
CYBR Sept. 30, 2025 4,000 $1,627,520 No longer tracked
VTYX March 31, 2026 180,114 $1,626,429 No longer tracked
NTR June 30, 2025 30,894 $1,534,505 26.2%
OLMA June 30, 2026 100,000 $1,491,000 -12.5%
MRVL Sept. 30, 2025 18,730 $1,449,702 189.3%
FROG June 30, 2025 42,871 $1,371,872 106.8%
BHVN Dec. 31, 2025 91,155 $1,368,237 23.2%
DAWN March 31, 2026 145,371 $1,354,858 No longer tracked
BCAX Dec. 31, 2025 85,747 $1,353,945 49.8%
SHLT June 30, 2025 632,456 $1,311,081 No longer tracked
NTLA Sept. 30, 2025 128,780 $1,207,956 -26.6%
NNDM Sept. 30, 2025 717,518 $1,162,379 -1.6%
TRDA March 31, 2026 110,942 $1,140,484 -39.5%
SABS Dec. 31, 2025 566,395 $1,138,454 0.4%
INZY June 30, 2025 1,191,140 $1,083,937 No longer tracked
TNYA March 31, 2026 1,500,000 $1,067,250 3.8%
BMY June 30, 2026 17,500 $1,061,375 15.9%
OTLK June 30, 2025 857,142 $1,045,713 -55.8%
KRYS Sept. 30, 2025 7,335 $1,008,269 92.2%
MRSN March 31, 2025 690,272 $987,089 No longer tracked
ALMS March 31, 2025 125,000 $982,500 285.1%
CATX March 31, 2026 349,973 $962,426 No longer tracked
VTGN Sept. 30, 2025 447,939 $895,878 -93.2%
JSPR March 31, 2026 485,401 $888,284 -14.7%
ARVN June 30, 2025 125,000 $877,500 28.7%
XENE June 30, 2025 26,097 $875,554 97.0%
LRMR Dec. 31, 2025 260,385 $841,044 8.0%
PERI June 30, 2025 102,612 $835,262 -4.3%
RGLS June 30, 2025 452,845 $792,479 No longer tracked
PEPG March 31, 2026 121,467 $790,750 76.3%
NICE June 30, 2026 5,611 $618,669 10.8%
VIR June 30, 2025 90,855 $588,740 88.1%
ETNB Dec. 31, 2025 39,675 $583,223 No longer tracked
MLTX Dec. 31, 2025 81,010 $580,842 24.2%
ZURA June 30, 2025 421,229 $543,385 444.8%
S Sept. 30, 2025 27,000 $493,560 20.3%
CMMB Dec. 31, 2025 179,425 $471,888 27.0%
KYTX March 31, 2025 118,758 $444,155 344.6%
ARWR Dec. 31, 2025 12,496 $430,987 31.5%
CGNT Sept. 30, 2025 45,181 $417,472 3.9%
FATE June 30, 2025 397,177 $313,810 127.7%
CGEN March 31, 2025 177,094 $270,954 73.3%
KZR Sept. 30, 2025 58,539 $268,109 No longer tracked
SLDB Sept. 30, 2025 50,190 $244,425 50.5%
DTIL June 30, 2026 40,000 $220,000 13.5%
OKUR March 31, 2026 60,454 $175,317 -3.9%
DSGN Dec. 31, 2025 21,918 $165,043 66.4%
ALEC June 30, 2025 109,208 $134,326 73.6%
ELEV Sept. 30, 2025 328,562 $120,615 No longer tracked
MREO March 31, 2026 255,400 $106,425 -6.8%
LVTX June 30, 2025 48,420 $61,493 No longer tracked
FHTX June 30, 2026 12,224 $58,431 43.0%
APLT March 31, 2026 50,000 $5,000 No longer tracked
IMTXW June 30, 2025 100,000 $1,580 No longer tracked