Sona Asset Management (US) LLC is an SEC-registered investment adviser based in New York, NY that reports managing 2 hedge funds on Form ADV. It reports $33.5 billion in regulatory assets under management. Its private funds, of all types, hold $29.4 billion in gross assets. Its disclosed U.S. stock holdings returned an estimated +6.1% 2026 YTD through Jun 30 (S&P 500: +9.5%), based on 13F filings. Over a longer period they returned an estimated +19.7% from Q3 2024 to Q2 2026, compared with +37.2% for the S&P 500, based on 13F filings.
- Regulatory assets under management
- $33.5 billionForm ADV Item 5.F
- Gross assets of private funds
- $29.4 billionAll private fund types, Form ADV
- Hedge funds managed
- 25 private funds in total
- Employees
- 39Form ADV Item 5.A
- Registration
- SEC-registered adviserCRD 291738
- Latest Form ADV
- 07/09/2026Disciplinary disclosures: none reported
Estimated 13F portfolio performance
Estimated by AltMountain, derived from the firm’s public Form 13F filings. Not reported by the firm and not the return of any fund.
| Quarter | Est. 13F return | S&P 500 |
|---|---|---|
| Q2 2026 | +5.5% | +14.8% |
| Q1 2026 | +0.5% | -4.6% |
| Q4 2025 | +3.6% | +2.4% |
| Q3 2025 | +4.5% | +7.8% |
| Q2 2025 | +1.0% | +10.4% |
| Q1 2025 | -4.3% | -4.5% |
| Q4 2024 | +4.0% | +2.1% |
| Q3 2024 | +3.6% | +5.4% |
Estimate of the firm's disclosed long U.S. stock portfolio from its quarterly 13F filings, holding each quarter-end portfolio to the next quarter-end at prices implied by all 13F filers. It is a price return before dividends and fees, ignores shorts, options, bonds, cash and trading within the quarter, and is not the return of any fund. Disclosures
Manager of this firm? Report your fund’s actual net return, or email hello@altmountain.com to correct or remove this estimate. Removal requests from the firm are honored.
13F holdings as of Jun 30, 2026
The 50 largest of 379 share positions ($2,206,833,720) reported by Sona Asset Management (US) LLC on Form 13F for the quarter ended Jun 30, 2026, filed Aug 14, 2026. Shown as filed with the SEC. Original filing on SEC.gov ↗
| Stock | Value | % of 13F portfolio | Shares | Shares vs prior quarter |
|---|---|---|---|---|
| Echostar Corp | $232,154,860 | 10.52% | 2,287,240 | +22.55% |
| Warner Bros Discovery Inc | $146,500,912 | 6.64% | 5,495,158 | -7.43% |
| Invesco Exchange Traded FD T | $137,930,706 | 6.25% | 648,262 | New |
| Kyivstar Group LTD | $64,911,732 | 2.94% | 4,014,331 | -27.67% |
| Sharonai Holdings Inc | $63,440,987 | 2.87% | 749,362 | +649.36% |
| Alphabet Inc | $62,442,972 | 2.83% | 1,245,000 | New |
| Ishares TR | $51,736,781 | 2.34% | 536,466 | +6,647.15% |
| Aes Corp | $48,656,613 | 2.20% | 3,319,005 | -69.99% |
| Alphabet Inc | $42,943,700 | 1.95% | 850,000 | New |
| Rocket Cos Inc | $40,556,250 | 1.84% | 2,575,000 | New |
| Super Micro Computer Inc | $38,502,041 | 1.74% | 750,000 | New |
| Blue Acquisition Corp. | $35,429,005 | 1.61% | 3,342,359 | Unchanged |
| Charter Communications Inc | $25,744,135 | 1.17% | 181,029 | +1,710.29% |
| Borr Drilling LTD | $24,986,500 | 1.13% | 6,050,000 | New |
| Viasat Inc | $24,449,964 | 1.11% | 272,241 | New |
| Ishares TR | $22,842,748 | 1.04% | 209,432 | -81.20% |
| Bitdeer Technologies Group | $22,376,700 | 1.01% | 1,410,000 | +22.82% |
| Service Pptys TR | $22,139,000 | 1.00% | 13,100,000 | New |
| Soren Acquisition Corp | $18,352,000 | 0.83% | 1,850,000 | Unchanged |
| Iheartmedia Inc | $17,629,858 | 0.80% | 4,109,524 | +119.21% |
| Lafayette Digital Acquisitio | $16,699,750 | 0.76% | 1,675,000 | Unchanged |
| CCC Intelligent Solutions HL | $16,423,491 | 0.74% | 3,182,847 | New |
| Manchester Utd PLC New | $15,624,548 | 0.71% | 681,402 | New |
| Alphabet Inc | $15,552,742 | 0.70% | 43,520 | New |
| Amc Entmt Hldgs Inc | $13,882,843 | 0.63% | 7,306,759 | New |
| Rre Ventures Acquisition Cor | $12,036,000 | 0.55% | 1,200,000 | New |
| Dauch Corp | $10,835,973 | 0.49% | 1,999,257 | New |
| GDS Hldgs LTD | $10,309,299 | 0.47% | 343,300 | New |
| Nextnav Inc | $10,157,982 | 0.46% | 569,713 | +9.25% |
| Fortress Value Acqu Corp V | $10,110,000 | 0.46% | 1,000,000 | Unchanged |
| Irenic Acquisition Corp | $9,990,000 | 0.45% | 1,000,000 | New |
| Averin Cap Acquisition Corp | $9,960,000 | 0.45% | 1,000,000 | New |
| Mountain Lake Acquisit Corp | $9,930,000 | 0.45% | 1,000,000 | Unchanged |
| Comcast Corp New | $9,820,000 | 0.45% | 400,000 | New |
| Roku Inc | $9,669,800 | 0.44% | 70,000 | New |
| Norfolk Southn Corp | $9,437,700 | 0.43% | 30,000 | -56.57% |
| Cambridge Acquisition Corp | $9,414,500 | 0.43% | 950,000 | New |
| Bleichroeder Acquisiti Corp | $9,288,000 | 0.42% | 900,000 | +159.96% |
| Digital Rlty TR Inc | $8,979,000 | 0.41% | 50,000 | New |
| Illumination Acquisitio Corp | $8,910,000 | 0.40% | 900,000 | New |
| Keystone Acquisition Corp | $8,874,000 | 0.40% | 900,000 | New |
| Revolution Medicines Inc | $8,699,156 | 0.39% | 46,450 | New |
| Qiagen NV | $8,682,546 | 0.39% | 222,060 | Unchanged |
| Iris Acquisition Corp II | $8,440,500 | 0.38% | 850,000 | Unchanged |
| Oceanhawk Acquisition Corp | $8,415,000 | 0.38% | 850,000 | New |
| Newhold Invts Corp IV | $8,200,000 | 0.37% | 800,000 | New |
| Flutter Entmt PLC | $8,053,346 | 0.36% | 78,823 | New |
| Archimedes Tech Spac Ptnrs I | $8,008,000 | 0.36% | 800,000 | Unchanged |
| Muzero Acquisition Corp | $7,944,000 | 0.36% | 800,000 | Unchanged |
| D. Boral Arc Acq I Corp. | $7,822,500 | 0.35% | 750,000 | New |
Changes since Mar 31, 2026
Comparing the share counts in the two quarter-end filings: 135 new positions, 47 sold out, 24 increased, 22 reduced and 198 unchanged.
New positions
| Stock | Value | Shares |
|---|---|---|
| Invesco Exchange Traded FD T | $137,930,706 | 648,262 |
| Alphabet Inc | $62,442,972 | 1,245,000 |
| Alphabet Inc | $42,943,700 | 850,000 |
| Rocket Cos Inc | $40,556,250 | 2,575,000 |
| Super Micro Computer Inc | $38,502,041 | 750,000 |
| Borr Drilling LTD | $24,986,500 | 6,050,000 |
| Viasat Inc | $24,449,964 | 272,241 |
| Service Pptys TR | $22,139,000 | 13,100,000 |
| CCC Intelligent Solutions HL | $16,423,491 | 3,182,847 |
| Manchester Utd PLC New | $15,624,548 | 681,402 |
| Alphabet Inc | $15,552,742 | 43,520 |
| Amc Entmt Hldgs Inc | $13,882,843 | 7,306,759 |
| Rre Ventures Acquisition Cor | $12,036,000 | 1,200,000 |
| Dauch Corp | $10,835,973 | 1,999,257 |
| GDS Hldgs LTD | $10,309,299 | 343,300 |
| Irenic Acquisition Corp | $9,990,000 | 1,000,000 |
| Averin Cap Acquisition Corp | $9,960,000 | 1,000,000 |
| Comcast Corp New | $9,820,000 | 400,000 |
| Roku Inc | $9,669,800 | 70,000 |
| Cambridge Acquisition Corp | $9,414,500 | 950,000 |
Sold out
| Stock | Value at Mar 31, 2026 | Shares held then |
|---|---|---|
| SPDR Series Trust | $52,105,900 | 2,345,000 |
| Averin Cap Acquisition Corp | $10,000,000 | 1,000,000 |
| Blue Owl Capital Corporation | $9,799,160 | 886,000 |
| Cambridge Acquisition Corp | $9,462,000 | 950,000 |
| Illumination Acquisitio Corp | $8,928,000 | 900,000 |
| Kensington Cap Acquisition | $7,028,000 | 700,000 |
| Qorvo Inc | $6,969,560 | 90,046 |
| Graf Global Corp | $6,426,000 | 600,000 |
| Black Spade Acquisition III | $6,000,000 | 600,000 |
| Colombier Acquisition Corp I | $5,090,000 | 500,000 |
| Idea Acquisition Corp | $4,955,000 | 500,000 |
| Metals Acquisition Corp II | $4,036,000 | 400,000 |
| Spartacus Acquisition Corp I | $4,014,000 | 400,000 |
| Kpet Ultra Paceline Corp | $4,000,000 | 400,000 |
| Globalstar Inc | $3,985,200 | 60,000 |
| Alibaba Group Hldg LTD | $3,912,595 | 31,186 |
| Spacsphere Acquisition Corp | $3,524,500 | 350,000 |
| Blue WTR Acquisition Corp IV | $3,472,000 | 350,000 |
| Core Scientific Inc New | $3,291,200 | 220,000 |
| Willow Lane Acquisition CRP | $3,030,000 | 300,000 |
Largest increases
| Stock | Change in shares | Change | Value now | Shares now |
|---|---|---|---|---|
| Sharonai Holdings Inc | +649,362 | +649.36% | $63,440,987 | 749,362 |
| Ishares TR | +528,515 | +6,647.15% | $51,736,781 | 536,466 |
| Echostar Corp | +420,870 | +22.55% | $232,154,860 | 2,287,240 |
| Charter Communications Inc | +171,029 | +1,710.29% | $25,744,135 | 181,029 |
| Iheartmedia Inc | +2,234,856 | +119.21% | $17,629,858 | 4,109,524 |
| Bleichroeder Acquisiti Corp | +553,789 | +159.96% | $9,288,000 | 900,000 |
| Bitdeer Technologies Group | +261,976 | +22.82% | $22,376,700 | 1,410,000 |
| Ai Infrastructure Acquisi | +346,172 | +225.04% | $5,115,000 | 500,000 |
| Viking Acquisition Corp I | +300,000 | +233.26% | $4,380,435 | 428,614 |
| Lionheart Holdings | +259,302 | +184.30% | $4,308,000 | 400,000 |
| Axiom Intelligence Ac Corp 1 | +200,351 | +44.56% | $6,721,000 | 650,000 |
| Silicon VY Acquisition Corp | +148,609 | +50.70% | $4,457,146 | 441,739 |
| Hertz Global Hldgs Inc | +550,000 | +98.75% | $2,507,256 | 1,106,956 |
| Petroleo Brasileiro S A | +60,000 | +100.00% | $1,939,200 | 120,000 |
| Quantum Corp | +79,908 | +114.00% | $1,650,000 | 150,000 |
| Nextnav Inc | +48,236 | +9.25% | $10,157,982 | 569,713 |
| Everpure Inc | +10,000 | +40.00% | $2,757,650 | 35,000 |
| Cipher Digital Inc | +12,000 | +5.45% | $5,684,000 | 232,000 |
| Gigcapital9 Corp | +550,000 | +157.14% | $234,000 | 900,000 |
| Spring VY Acquisition Corp I | +6,018 | +1.20% | $5,151,263 | 506,018 |
Largest reductions
| Stock | Change in shares | Change | Value now | Shares now |
|---|---|---|---|---|
| Aes Corp | -7,739,260 | -69.99% | $48,656,613 | 3,319,005 |
| Ishares TR | -904,656 | -81.20% | $22,842,748 | 209,432 |
| Ishares TR | -1,222,340 | -97.44% | $1,683,095 | 32,114 |
| Vanguard Scottsdale FDS | -690,859 | -98.45% | $899,645 | 10,885 |
| Silicon Laboratories Inc | -165,000 | -94.25% | $2,198,495 | 10,059 |
| Kyivstar Group LTD | -1,535,348 | -27.67% | $64,911,732 | 4,014,331 |
| Sandisk Corp | -7,500 | -75.00% | $5,684,325 | 2,500 |
| Norfolk Southn Corp | -39,083 | -56.57% | $9,437,700 | 30,000 |
| Warner Bros Discovery Inc | -441,051 | -7.43% | $146,500,912 | 5,495,158 |
| Terawulf Inc | -381,000 | -71.75% | $3,705,000 | 150,000 |
| SPDR Series Trust | -74,446 | -88.68% | $915,900 | 9,504 |
| Ihs Holding Limited | -776,337 | -86.13% | $1,030,000 | 125,000 |
| Ishares TR | -75,855 | -85.99% | $988,669 | 12,363 |
| Hut 8 Corp | -46,400 | -50.77% | $5,195,025 | 45,000 |
| Bloom Energy Corp | -10,375 | -41.01% | $4,932,713 | 14,925 |
| Riot Platforms Inc | -97,170 | -30.18% | $6,155,846 | 224,830 |
| Aeva Technologies Inc | -65,000 | -86.67% | $287,200 | 10,000 |
| Newhold Invt Corp III | -93,696 | -32.09% | $2,159,531 | 198,304 |
| Ishares Inc | -6,935 | -9.37% | $5,047,982 | 67,065 |
| Space Asset Acquisition Corp | -20,256 | -15.19% | $105,070 | 113,076 |
Each list shows up to 20 positions, largest first by dollar amount. Changes compare two quarter-end snapshots, with the earlier share count adjusted for stock splits AltMountain detected. They do not show when, or at what price, anything was bought or sold.
From public Form 13F filings, not verified. Form 13F is filed up to 45 days after the quarter ends, so positions may have changed. It lists only certain long positions in U.S.-listed stocks and exchange-traded funds; options are not shown here, and short positions, most bonds, cash, non-U.S. securities and private investments are not reported at all, so a holding may be one side of a hedge. A filing covers the manager as a whole, not any single fund, and filings contain errors. This is not investment advice or a recommendation to buy or sell any security. Disclosures
Hedge funds filing Form D (4)
Matched to this firm by the fund names and related persons in each Form D. The list may be incomplete.
Private investment funds filing Form D (2)
Matched to this firm by the fund names and related persons in each Form D. The list may be incomplete.
Private funds reported on Form ADV (2)
As reported in the adviser's Form ADV filed Mar 28, 2024. Funds also listed from Form D are shown above.
From SEC filings. Firm data comes from the SEC's Form ADV data as of Oct 2, 2026; performance estimates come from Form 13F. AltMountain has not verified this information, and it is not an offer, solicitation or recommendation. Full disclosures