ION Fund Management Ltd — 13F Holdings & Portfolio
CIK 2105906 · latest 13F-HR filed 2026-05-15
ION Fund Management Ltd manages $706.7M in 13F-reported U.S. long-equity assets across 68 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are TEVA (16.45%), DK (8.74%), SEDG (6.38%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 15 new positions, exited 15, added to 28, and trimmed 13.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$706.7M
Long-equity book
68
Distinct positions
2026-03-31
Filed 2026-05-15
+15 / −15 / ↑28 / ↓13
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- SOLAREDGE TECHNOLOGIES INC$33.4M +145.3%
- SOTERA HEALTH CO$16.9M +9601.4%
- NEXGEN ENERGY LTD$12.0M +65.3%
- TRANSOCEAN LTD$11.6M +63.9%
- DELEK US HLDGS INC NEW$9.3M +17.8%
Top Trims
- CHECK POINT SOFTWARE TECH L-$43.4M -92.1%
- AERCAP HOLDINGS NV-$20.9M -55.0%
- ISHARES SILVER TR-$20.9M -93.8%
- TEVA PHARMACEUTICAL INDS LT-$10.2M -8.0%
- CIENA CORP-$7.0M -39.6%
New Positions
- ULTRA CLEAN HLDGS INC$21.8M
- FLOWSERVE CORP$14.5M
- FLUOR CORP$14.0M
- ONTO INNOVATION INC$6.2M
- LITTELFUSE INC$2.7M
Exited Positions
- ATLASSIAN CORPORATION$37.4M
- COSTAR GROUP INC$31.0M
- PERRIGO CO PLC$24.5M
- LAMB WESTON HLDGS INC$23.6M
- VANECK ETF TRUST$21.0M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | TEVA PHARMACEUTICAL INDS LT | TEVA | 881624209 | $116.2M | 16.45% | 3,859,443 | SH |
| 2 | DELEK US HLDGS INC NEW | DK | 24665A103 | $61.7M | 8.74% | 1,370,000 | SH |
| 3 | SOLAREDGE TECHNOLOGIES INC | SEDG | 83417M104 | $45.1M | 6.38% | 883,690 | SH |
| 4 | DANAOS CORPORATION | DAC | Y1968P121 | $42.9M | 6.07% | 381,122 | SH |
| 5 | ILLUMINA INC | ILMN | 452327109 | $39.7M | 5.62% | 322,200 | SH |
| 6 | PHINIA INC | PHIN | 71880K101 | $34.9M | 4.94% | 510,000 | SH |
| 7 | NEXGEN ENERGY LTD | NXE | 65340P106 | $30.4M | 4.30% | 2,618,200 | SH |
| 8 | TRANSOCEAN LTD | RIG | H8817H100 | $29.8M | 4.21% | 4,488,400 | SH |
| 9 | NAVIOS MARITIME PARTNERS LP | NMM | Y62267409 | $29.1M | 4.12% | 430,944 | SH |
| 10 | VALE S A Call | VALE | 91912E105 | $27.1M | 3.84% | 1,706,000 | SH |
| 11 | QNITY ELECTRONICS INC | Q | 74743L100 | $25.6M | 3.62% | 221,600 | SH |
| 12 | AERCAP HOLDINGS NV | AER | N00985106 | $17.1M | 2.43% | 125,000 | SH |
| 13 | SOTERA HEALTH CO | SHC | 83601L102 | $17.1M | 2.42% | 1,193,390 | SH |
| 14 | ULTRA CLEAN HLDGS INC | UCTT | 90385V107 | $14.9M | 2.11% | 239,852 | SH |
| 15 | FLUOR CORP | FLR | 343412102 | $13.0M | 1.84% | 279,200 | SH |
| 16 | PETROLEO BRASILEIRO S A Call | PBR | 71654V408 | $12.4M | 1.76% | 600,000 | SH |
| 17 | FLOWSERVE CORP | FLS | 34354P105 | $12.0M | 1.70% | 163,000 | SH |
| 18 | COREWEAVE INC Put | CRWV | 21873S108 | $11.4M | 1.61% | 146,900 | SH |
| 19 | SOLAREDGE TECHNOLOGIES INC | SEDG | 83417M104 | $11.2M | 1.59% | 220,000 | SH |
| 20 | CIENA CORP | CIEN | 171779309 | $10.7M | 1.52% | 27,665 | SH |
| 21 | TTM TECHNOLOGIES INC | TTMI | 87305R109 | $9.7M | 1.38% | 100,000 | SH |
| 22 | ILLUMINA INC | ILMN | 452327109 | $8.4M | 1.19% | 68,000 | SH |
| 23 | ULTRA CLEAN HLDGS INC | UCTT | 90385V107 | $6.8M | 0.97% | 110,000 | SH |
| 24 | ONTO INNOVATION INC | ONTO | 683344105 | $6.2M | 0.87% | 30,000 | SH |
| 25 | AMAZON COM INC | AMZN | 023135106 | $5.0M | 0.71% | 24,000 | SH |
| 26 | BLOCK INC | XYZ | 852234103 | $4.8M | 0.68% | 80,000 | SH |
| 27 | CHECK POINT SOFTWARE TECH L | CHKP | M22465104 | $3.7M | 0.53% | 26,000 | SH |
| 28 | OKTA INC | OKTA | 679295105 | $3.1M | 0.45% | 40,000 | SH |
| 29 | LITTELFUSE INC | LFUS | 537008104 | $2.7M | 0.38% | 8,000 | SH |
| 30 | INTERACTIVE BROKERS GROUP I | IBKR | 45841N107 | $2.7M | 0.38% | 40,000 | SH |
| 31 | PALO ALTO NETWORKS INC | PANW | 697435105 | $2.6M | 0.36% | 16,000 | SH |
| 32 | FLOWSERVE CORP | FLS | 34354P105 | $2.5M | 0.35% | 34,000 | SH |
| 33 | GLOBAL E ONLINE LTD | GLBE | M5216V106 | $2.5M | 0.35% | 80,000 | SH |
| 34 | GLOBAL E ONLINE LTD | GLBE | M5216V106 | $2.3M | 0.33% | 75,000 | SH |
| 35 | SPDR GOLD TR | GLD | 78463V107 | $2.2M | 0.31% | 5,045 | SH |
| 36 | VANECK ETF TRUST | GDXJ | 92189F791 | $2.1M | 0.30% | 17,370 | SH |
| 37 | PAR PAC HOLDINGS INC | PARR | 69888T207 | $2.0M | 0.28% | 32,065 | SH |
| 38 | AGNICO EAGLE MINES LTD | AEM | 008474108 | $1.9M | 0.26% | 9,200 | SH |
| 39 | VALE S A | VALE | 91912E105 | $1.7M | 0.24% | 107,100 | SH |
| 40 | SLB LIMITED | SLB | 806857108 | $1.7M | 0.24% | 32,470 | SH |
| 41 | HALLIBURTON CO | HAL | 406216101 | $1.6M | 0.23% | 42,025 | SH |
| 42 | VALARIS LTD | VAL | G9460G101 | $1.6M | 0.23% | 16,275 | SH |
| 43 | EXXON MOBIL CORP | XOM | 30231G102 | $1.6M | 0.22% | 9,360 | SH |
| 44 | ISHARES BITCOIN TRUST ETF | IBIT | 46438F101 | $1.5M | 0.22% | 40,000 | SH |
| 45 | PETROLEO BRASILEIRO S A | PBR | 71654V408 | $1.5M | 0.21% | 72,000 | SH |
| 46 | GLOBAL X FDS | SIL | 37954Y848 | $1.4M | 0.20% | 15,400 | SH |
| 47 | ISHARES SILVER TR | SLV | 46428Q109 | $1.4M | 0.19% | 20,100 | SH |
| 48 | PAYPAL HLDGS INC | PYPL | 70450Y103 | $1.4M | 0.19% | 30,000 | SH |
| 49 | MOTOROLA SOLUTIONS INC | MSI | 620076307 | $1.3M | 0.18% | 3,000 | SH |
| 50 | CVR ENERGY INC | CVI | 12662P108 | $1.1M | 0.16% | 33,385 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-15 | $706.7M | 68 | 0001178913-26-002740 |
| 2025-12-31 | 2026-02-17 | $857.4M | 69 | 0001178913-26-000526 |