Ion Asset Management Ltd. In its 13F for Q1 2024 (holdings as of March 31, 2024, filed May 15, 2024), Ion Asset Management Ltd. reported 37 stock positions worth $1.4 billion . Its top holding was Teva Pharmaceutical-SP ADR (TEVA) at 39.8% of the portfolio, followed by Aercap (AER, 7.2% ) and Ciena (CIEN, 6.8% ). Compared with Q4 2023, it opened 12 new positions, sold out of 7, added to 10 and reduced 12. The biggest buy was Tenable (TENB, shares +995% ) and the biggest sale an exit from Mattel (MAT).
Location Herzliya, L3
CIK 0001603837
Portfolio Value $1.4B (Q1 2024) Holdings 37 stocks · $1.4B Holdings quarter Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock % Of Portfolio ▼ Shares Held Total Value Change vs Q4 2023 TEVA Teva Pharmaceutical-SP ADR 38,578,487 $544.3M Reduce -4.3% AER Aercap Holdings NV 1,126,300 $97.9M Add +21.9% CIEN Ciena Corp. 1,873,779 $92.7M Reduce -13.4% DK Delek US Holdings Inc. 2,860,955 $87.9M Reduce -6.0% TENB Tenable Holdings Inc. 1,533,045 $75.8M Add +995.0% MRVL Marvell Technology Inc. 880,591 $62.4M Add +577.4% ZIM Zim Integrated Shipping Serv 4,227,000 $42.8M New KGS Kodiak Gas Services Inc. 1,530,935 $41.9M Reduce -25.6% GLD SPDR Gold Shares 172,200 $35.4M Add +23.9% SBLK Star Bulk Carriers Corp. 1,165,862 $27.8M Reduce -35.7% DAC Danaos Corp. 380,800 $27.5M Reduce -3.7% PHIN Phinia Inc. 650,000 $25.0M Add +3.2% SLV iShares Silver Trust 1,040,000 $23.7M Add +34.5% RIG Transocean Ltd. 3,600,000 $22.6M Add +26.7% IMAX Imax Corp. 1,120,000 $18.1M Add +35.3% IBIT iShares Bitcoin Trust ETF 376,000 $15.2M New DT Dynatrace Inc. 300,000 $13.9M Add +87.5% MNDY Monday.com Ltd. 53,350 $12.1M Reduce -68.5% TTWO Take-Two Interactive Softwre 80,000 $11.9M Add +100.0% CTV Innovid Corp. 4,566,721 $11.4M No change PI Impinj Inc. 88,200 $11.3M Reduce -11.8% GNK Genco Shipping & Trading Ltd. 540,000 $11.0M Reduce -45.8% P Everpure Inc. Class A filed as PURE STORAGE INC 184,500 $9.6M Reduce -38.5% WIX Wix.com Ltd. 60,000 $8.2M No change FCX Freeport-McMoran Inc. 150,000 $7.1M Reduce -79.3% UAN CVR Partners LP 86,600 $6.8M No change MSFT Microsoft Corp. 16,000 $6.7M Reduce -5.9% ITRI Itron Inc. 60,000 $5.6M New CCOI Cogent Communications Holdin 68,299 $4.5M New NVEI Nuvei Corp.-Subordinate VTG 70,000 $2.2M New TTMI TTM Technologies 63,800 $998K New S Sentinelone Inc. Class A 39,000 $909K New ACLS Axcelis Technologies Inc. 6,600 $736K New MBLY Mobileye Global Inc. Class A 19,400 $624K New LITE Lumentum Holdings Inc. 12,300 $582K New TSEM Tower Semiconductor Ltd. 15,000 $502K New HCP Hashicorp Inc. Class A 18,200 $490K New
Options reported separately and not counted above: QQQ puts ($197.5M), GOOG puts ($16.7M).
Other holdings (1): bonds, preferreds, convertibles and warrants · $6K (not counted above) Security Class Shares / Principal Value Change INNOVID CORP *W EXP 11/30/202 124,998 $6K No change
Total filed on the 13F, all lines: $1.4B.
Portfolio Sells Q4 2023 → Q1 2024 Portfolio Sells quarter Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q4 2023 % Of Portfolio Change To Portfolio ▲ MAT Mattel Inc. Sold out 0.00% −6.81 HES Hess Corp. Sold out 0.00% −3.12 FCX Freeport-McMoran Inc. Reduce -79.3% 0.52% −2.08 MNDY Monday.com Ltd. Reduce -68.5% 0.88% −1.80 WPM Wheaton Precious Metals Corp. Sold out 0.00% −1.43 CIEN Ciena Corp. Reduce -13.4% 6.77% −1.42 SBLK Star Bulk Carriers Corp. Reduce -35.7% 2.03% −1.21 EA Electronic Arts Inc. Sold out 0.00% −0.92 PANW Palo Alto Networks Inc. Sold out 0.00% −0.74 FLEX Flex Ltd. Sold out 0.00% −0.59 GNK Genco Shipping & Trading Ltd. Reduce -45.8% 0.80% −0.59 DAC Danaos Corp. Reduce -3.7% 2.01% −0.45 DKL Delek Logistics Partners LP Sold out 0.00% −0.43 KGS Kodiak Gas Services Inc. Reduce -25.6% 3.06% −0.41 P Everpure Inc. Class A Reduce -38.5% 0.70% −0.20 DK Delek US Holdings Inc. Reduce -6.0% 6.43% −0.17 MSFT Microsoft Corp. Reduce -5.9% 0.49% −0.05 PI Impinj Inc. Reduce -11.8% 0.83% +0.07 TEVA Teva Pharmaceutical-SP ADR Reduce -4.3% 39.79% +4.39
Portfolio Buys Q4 2023 → Q1 2024 Portfolio Buys quarter Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q4 2023 % Of Portfolio Change To Portfolio ▼ TENB Tenable Holdings Inc. Add +995.0% 5.54% +5.00 MRVL Marvell Technology Inc. Add +577.4% 4.56% +3.90 ZIM Zim Integrated Shipping Serv New 3.13% +3.13 AER Aercap Holdings NV Add +21.9% 7.16% +1.38 IBIT iShares Bitcoin Trust ETF New 1.11% +1.11 ITRI Itron Inc. New 0.41% +0.41 GLD SPDR Gold Shares Add +23.9% 2.59% +0.36 TTWO Take-Two Interactive Softwre Add +100.0% 0.87% +0.33 CCOI Cogent Communications Holdin New 0.33% +0.33 SLV iShares Silver Trust Add +34.5% 1.73% +0.31 DT Dynatrace Inc. Add +87.5% 1.02% +0.28 IMAX Imax Corp. Add +35.3% 1.32% +0.28 PHIN Phinia Inc. Add +3.2% 1.83% +0.22 NVEI Nuvei Corp.-Subordinate VTG New 0.16% +0.16 RIG Transocean Ltd. Add +26.7% 1.65% +0.14 TTMI TTM Technologies New 0.07% +0.07 S Sentinelone Inc. Class A New 0.07% +0.07 ACLS Axcelis Technologies Inc. New 0.05% +0.05 MBLY Mobileye Global Inc. Class A New 0.05% +0.05 LITE Lumentum Holdings Inc. New 0.04% +0.04 TSEM Tower Semiconductor Ltd. New 0.04% +0.04 HCP Hashicorp Inc. Class A New 0.04% +0.04
Options Activity Q4 2023 → Q1 2024 Security Type Change vs Q4 2023 Underlying Shares Value ▼ QQQ Invesco QQQ Trust Series 1 put Reduce -11.0% 444,800 $197.5M HYG Ishr Ibx Usd Hiyld CB ETF-Ui put Sold out 950,000 $73.5Mbefore exit GLD SPDR Gold Shares call Sold out 200,000 $38.2Mbefore exit GOOG Alphabet Inc. Class C put New 110,000 $16.7M
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings Quarter Positions 13F Reported Value Top Holdings Q3 2025 61 $818.4M TEVA, DK, GDX, CHKP, CSGP Q2 2025 58 $1.7B TEVA, AER, PRGO, CIEN, CSGP Q1 2025 52 $1.4B TEVA, AER, CIEN, PRGO, ILMN Q4 2024 57 $1.7B TEVA, AER, CIEN, ILMN, PRGO Q3 2024 62 $1.5B TEVA, AER, ILMN, CIEN, QRVO Q2 2024 66 $1.5B TEVA, AER, CIEN, QRVO, LW Q1 2024 37 $1.4B TEVA, AER, CIEN, DK, TENB