13F portfolio / Investment manager
Alkeon Capital
Panayotis Sparaggis (managing director)
The firm is based in New York, NY, according to its SEC filings.
Its earliest 13F holdings report on SEC EDGAR was filed in May 2003.
SEC Form ADV lists Panayotis D. Sparaggis as managing director and as owning 50% to 75% of the firm.
The 13F shows long US-listed stock and option positions only. It leaves out short positions, cash, bonds and most non-US holdings.
- Reported 13F value
- $25.9B
- Positions
- 79
- Est. 1-yearEstimate
- +19.3%SPY +15.7%
- Est. 3-year, annualizedEstimate
- +30.4%SPY +22.8%
As of Jun 30, 2026 · filed Aug 14, 2026
Holdings
10 new · 13 added · 23 trimmed · 33 unchanged · 6 sold out
| 1 | TSM on Yahoo Finance (opens in a new tab) | Taiwan Semiconductor ManufacSPONSORED ADS | 6.5% | $1.7B | 3,536,218 | Trimmed -34.8% | $106.20* | $413.04 | +288.9% |
| 2 | AMZN on Yahoo Finance (opens in a new tab) | Amazon Com IncCOM | 5.3% | $1.4B | 5,808,299 | Unchanged | $139.04* | $249.20 | +79.2% |
| 3 | LRCX on Yahoo Finance (opens in a new tab) | Lam Research CorpCOM NEW | 5.1% | $1.3B | 3,050,456 | Trimmed -21.8% | $75.56 | $266.99 | +253.4% |
| 4 | GOOGL on Yahoo Finance (opens in a new tab) | Alphabet IncCAP STK CL A | 5.1% | $1.3B | 3,686,368 | Trimmed -27.1% | $144.86* | $341.57 | +135.8% |
| 5 | QQQ on Yahoo Finance (opens in a new tab) | Invesco Qqq TrUNIT SER 1 | 4.6% | $1.2B | 1,608,257 | Added +21.3% | $507.17 | $711.19 | +40.2% |
| 6 | KLAC on Yahoo Finance (opens in a new tab) | KLA CorpCOM NEW | 4.4% | $1.1B | 3,759,150 | Added +547.1% | $175.73* | $168.76 | -4.0% |
| 7 | META on Yahoo Finance (opens in a new tab) | Meta Platforms IncCL A | 4.2% | $1.1B | 1,945,399 | Trimmed -9.3% | $322.55* | $706.95 | +119.2% |
| 8 | AMAT on Yahoo Finance (opens in a new tab) | Applied Matls IncCOM | 4.2% | $1.1B | 1,504,800 | New | $460.61 | $416.19 | -9.6% |
| 9 | TER on Yahoo Finance (opens in a new tab) | Teradyne IncCOM | 4.0% | $1.0B | 2,163,010 | Trimmed -22.5% | $123.94* | $332.52 | +168.3% |
| 10 | APH on Yahoo Finance (opens in a new tab) | Amphenol CorpCL A | 3.9% | $1.0B | 5,731,348 | Added +24.1% | $50.51 | $80.18 | +58.7% |
| 11 | ADI on Yahoo Finance (opens in a new tab) | Analog Devices IncCOM | 3.2% | $822M | 2,069,083 | Unchanged | $178.85* | $399.04 | +123.1% |
| 12 | CDNS on Yahoo Finance (opens in a new tab) | Cadence Design System IncCOM | 2.3% | $609M | 1,622,874 | Unchanged | $236.96* | $317.81 | +34.1% |
| 13 | SNPS on Yahoo Finance (opens in a new tab) | Synopsys IncCOM | 2.2% | $567M | 1,270,948 | Trimmed -19.0% | $452.37* | $451.08 | -0.3% |
| 14 | V on Yahoo Finance (opens in a new tab) | Visa IncCOM CL A | 1.9% | $504M | 1,468,618 | Unchanged | $235.32* | $400.91 | +70.4% |
| 15 | TWLO on Yahoo Finance (opens in a new tab) | Twilio IncCL A | 1.9% | $482M | 2,335,700 | Added +26.9% | $134.61 | $238.88 | +77.5% |
| 16 | NOK on Yahoo Finance (opens in a new tab) | Nokia CorpSPONSORED ADR | 1.8% | $478M | 36,000,000 | New | $12.87 | $9.31 | -27.6% |
| 17 | MKSI on Yahoo Finance (opens in a new tab) | Mks Inc.COM | 1.8% | $477M | 1,072,040 | New | $312.48 | $218.50 | -30.1% |
| 18 | VRT on Yahoo Finance (opens in a new tab) | Vertiv Holdings CoCOM CL A | 1.8% | $476M | 1,421,980 | Trimmed -43.2% | $171.53 | $209.09 | +21.9% |
| 19 | EXPE on Yahoo Finance (opens in a new tab) | Expedia Group IncCOM NEW | 1.8% | $467M | 1,825,276 | Trimmed -26.3% | $134.46* | $285.45 | +112.3% |
| 20 | VMC on Yahoo Finance (opens in a new tab) | Vulcan Matls CoCOM | 1.7% | $436M | 1,478,646 | Unchanged | $234.50* | $256.45 | +9.4% |
| 21 | TJX on Yahoo Finance (opens in a new tab) | TJX Cos Inc NewCOM | 1.6% | $424M | 2,799,971 | Unchanged | $87.29* | $146.95 | +68.3% |
| 22 | MA on Yahoo Finance (opens in a new tab) | Mastercard IncorporatedCL A | 1.5% | $400M | 778,465 | Unchanged | $401.26* | $614.51 | +53.1% |
| 23 | BWXT on Yahoo Finance (opens in a new tab) | Bwx Technologies IncCOM | 1.5% | $394M | 2,022,748 | Added +16.3% | $156.89 | $136.38 | -13.1% |
| 24 | ETR on Yahoo Finance (opens in a new tab) | Entergy Corp NewCOM | 1.5% | $384M | 3,341,012 | Unchanged | $83.51 | $105.06 | +25.8% |
| 25 | SIMO on Yahoo Finance (opens in a new tab) | Silicon Motion Technology CoSPONSORED ADR | 1.4% | $367M | 1,100,000 | New | $231.08 | $214.67 | -7.1% |
| 26 | MLM on Yahoo Finance (opens in a new tab) | Martin Marietta Matls IncCOM | 1.4% | $362M | 627,351 | Trimmed -16.1% | $489.65* | $497.88 | +1.7% |
| 27 | EQIX on Yahoo Finance (opens in a new tab) | Equinix IncCOM | 1.3% | $348M | 333,775 | Added +42.8% | $816.52* | $975.96 | +19.5% |
| 28 | CEG on Yahoo Finance (opens in a new tab) | Constellation Energy CorpCOM | 1.2% | $319M | 1,284,739 | Trimmed -6.5% | $234.77 | $271.45 | +15.6% |
| 29 | MSFT on Yahoo Finance (opens in a new tab) | Microsoft CorpCOM | 1.2% | $318M | 851,176 | Trimmed -29.1% | $358.06* | $526.88 | +47.1% |
| 30 | UBER on Yahoo Finance (opens in a new tab) | Uber Technologies IncCOM | 1.2% | $313M | 4,336,005 | Added +12.3% | $60.89* | $69.99 | +14.9% |
| 31 | VST on Yahoo Finance (opens in a new tab) | Vistra CorpCOM | 1.2% | $309M | 1,946,357 | Trimmed -23.6% | $148.67 | $153.35 | +3.1% |
| 32 | PWR on Yahoo Finance (opens in a new tab) | Quanta Svcs IncCOM | 1.1% | $289M | 400,983 | Unchanged | $268.24 | $631.76 | +135.5% |
| 33 | CG on Yahoo Finance (opens in a new tab) | Carlyle Group IncCOM | 1.0% | $250M | 5,941,316 | Unchanged | $31.32* | $36.33 | +16.0% |
| 34 | SOXX on Yahoo Finance (opens in a new tab) | iShares TrISHARES SEMICDTR | 0.9% | $238M | 371,200 | Added +19.5% | $343.64 | $497.90 | +44.9% |
| 35 | ICE on Yahoo Finance (opens in a new tab) | Intercontinental Exchange InCOM | 0.9% | $222M | 1,800,310 | Unchanged | $109.21* | $159.40 | +46.0% |
| 36 | CRH on Yahoo Finance (opens in a new tab) | CRH PLCORD | 0.8% | $219M | 2,046,550 | Unchanged | $106.20 | $83.32 | -21.5% |
| 37 | NVT on Yahoo Finance (opens in a new tab) | Nvent Elec PLCSHS | 0.8% | $206M | 1,217,317 | New | $155.66 | $143.22 | -8.0% |
| 38 | TDG on Yahoo Finance (opens in a new tab) | Transdigm Group IncCOM | 0.8% | $199M | 149,078 | Unchanged | $839.81* | $1141.26 | +35.9% |
| 39 | MELI on Yahoo Finance (opens in a new tab) | Mercadolibre IncCOM | 0.7% | $186M | 109,499 | Trimmed -39.3% | $1515.84* | $1819.99 | +20.1% |
| 40 | BURL on Yahoo Finance (opens in a new tab) | Burlington Stores IncCOM | 0.7% | $185M | 585,000 | Added +7.3% | $266.98 | $260.55 | -2.4% |
| 41 | CP on Yahoo Finance (opens in a new tab) | Canadian Pacific Kansas CityCOM | 0.7% | $174M | 2,004,000 | Unchanged | $75.56 | $86.99 | +15.1% |
| 42 | DASH on Yahoo Finance (opens in a new tab) | DoorDash IncCL A | 0.7% | $172M | 933,210 | Trimmed -21.1% | $234.36 | $187.87 | -19.8% |
| 43 | RTX on Yahoo Finance (opens in a new tab) | RTX CorporationCOM | 0.7% | $169M | 890,000 | Trimmed -28.8% | $171.46 | $192.71 | +12.4% |
| 44 | NI on Yahoo Finance (opens in a new tab) | Nisource IncCOM | 0.6% | $160M | 3,365,500 | Unchanged | $37.96 | $42.67 | +12.4% |
| 45 | GE on Yahoo Finance (opens in a new tab) | GE AerospaceCOM NEW | 0.5% | $120M | 320,000 | Trimmed -54.3% | $168.21 | $315.09 | +87.3% |
| 46 | BABA on Yahoo Finance (opens in a new tab) | Alibaba Group Hldg LtdSPONSORED ADS | 0.4% | $115M | 1,200,000 | Added +140.0% | $134.59 | $109.74 | -18.5% |
| 47 | SSNC on Yahoo Finance (opens in a new tab) | SS&C Tech HldgsCOM | 0.4% | $110M | 1,764,916 | Unchanged | $53.86* | $83.79 | +55.6% |
| 48 | SHW on Yahoo Finance (opens in a new tab) | Sherwin Williams CoCOM | 0.4% | $106M | 306,735 | Unchanged | $256.04* | $332.77 | +30.0% |
| 49 | ROST on Yahoo Finance (opens in a new tab) | Ross Stores IncCOM | 0.4% | $101M | 472,635 | Unchanged | $112.50* | $236.64 | +110.3% |
| 50 | ALAB on Yahoo Finance (opens in a new tab) | Astera Labs IncCOM | 0.4% | $97M | 200,000 | Unchanged | $88.24 | $286.76 | +225.0% |
| 51 | SPOT on Yahoo Finance (opens in a new tab) | Spotify Technology S ASHS | 0.4% | $94M | 204,000 | New | $476.71 | $523.14 | +9.7% |
| 52 | NVDA on Yahoo Finance (opens in a new tab) | Nvidia CorporationCOM | 0.3% | $88M | 439,459 | Added +2.3% | $141.36 | $215.30 | +52.3% |
| 53 | EDU on Yahoo Finance (opens in a new tab) | New Oriental Ed & TechnologySPON ADR | 0.3% | $79M | 1,727,986 | Unchanged | $55.89* | $60.75 | +8.7% |
| 54 | SPGI on Yahoo Finance (opens in a new tab) | S&P Global IncCOM | 0.3% | $78M | 190,416 | Unchanged | $367.14* | $426.66 | +16.2% |
| 55 | YMM on Yahoo Finance (opens in a new tab) | Full Truck Alliance Co LtdSPONSORED ADS | 0.3% | $76M | 9,398,535 | Added +5.6% | $6.91* | $8.77 | +26.9% |
| 56 | YUM on Yahoo Finance (opens in a new tab) | Yum Brands IncCOM | 0.3% | $74M | 465,603 | Unchanged | $119.53* | $149.82 | +25.3% |
| 57 | CTAS on Yahoo Finance (opens in a new tab) | Cintas CorpCOM | 0.3% | $68M | 401,539 | Unchanged | $179.96* | $212.66 | +18.2% |
| 58 | DIA on Yahoo Finance (opens in a new tab) | State Str SPDR Dow Jones IndUT SER 1 | 0.2% | $63M | 119,700 | Unchanged | $469.49 | $518.27 | +10.4% |
| 59 | NAVN on Yahoo Finance (opens in a new tab) | Navan IncCL A | 0.2% | $50M | 2,185,278 | Trimmed -18.7% | $15.89 | $24.90 | +56.7% |
| 60 | LOW on Yahoo Finance (opens in a new tab) | Lowes Cos IncCOM | 0.2% | $47M | 213,594 | Unchanged | $217.25* | $196.70 | -9.5% |
| 61 | MDGL on Yahoo Finance (opens in a new tab) | Madrigal Pharmaceuticals IncCOM | 0.2% | $43M | 80,000 | Unchanged | $441.92 | $447.74 | +1.3% |
| 62 | ORIC on Yahoo Finance (opens in a new tab) | Oric Pharmaceuticals IncCOM | 0.2% | $40M | 3,739,096 | Trimmed -17.0% | $8.02* | $12.19 | +52.1% |
| 63 | TLT on Yahoo Finance (opens in a new tab) | iShares Tr20 YR TR BD ETF | 0.2% | $40M | 463,000 | Trimmed -9.4% | $85.79 | $79.88 | -6.9% |
| 64 | HNGE on Yahoo Finance (opens in a new tab) | Hinge Health IncCL A | 0.1% | $39M | 466,104 | Trimmed -32.6% | $44.48 | $99.42 | +123.5% |
| 65 | TOST on Yahoo Finance (opens in a new tab) | Toast IncCL A | 0.1% | $34M | 1,238,096 | Unchanged | $30.46 | $31.39 | +3.1% |
| 66 | PATH on Yahoo Finance (opens in a new tab) | Uipath IncCL A | 0.1% | $28M | 2,611,276 | Unchanged | $18.01* | $12.83 | -28.8% |
| 67 | SARO on Yahoo Finance (opens in a new tab) | Standardaero IncCOM | 0.1% | $25M | 852,019 | Trimmed -29.1% | $28.64 | $21.30 | -25.6% |
| 68 | IREN on Yahoo Finance (opens in a new tab) | Iren LimitedORDINARY SHARES | 0.1% | $25M | 550,000 | Added +10.0% | $17.01 | $27.31 | +60.6% |
| 69 | MCHP on Yahoo Finance (opens in a new tab) | Microchip Technology Inc.COM | 0.1% | $19M | 206,000 | New | $88.40 | $73.87 | -16.4% |
| 70 | XE on Yahoo Finance (opens in a new tab) | X-Energy IncCOM CL A | 0.1% | $18M | 1,000,000 | New | $25.89 | $10.22 | -60.5% |
| 71 | CMG on Yahoo Finance (opens in a new tab) | Chipotle Mexican Grill IncCOM | 0.1% | $17M | 500,289 | Unchanged | $61.64* | $29.90 | -51.5% |
| 72 | AAPL on Yahoo Finance (opens in a new tab) | Apple IncCOM | 0.1% | $16M | 56,627 | Unchanged | $174.64* | $342.77 | +96.3% |
| 73 | DLO on Yahoo Finance (opens in a new tab) | Dlocal LtdCLASS A COM | 0.0% | $11M | 823,837 | Unchanged | $18.98* | $14.44 | -23.9% |
| 74 | ANRO on Yahoo Finance (opens in a new tab) | Alto Neuroscience IncCOM SHS | 0.0% | $3M | 102,101 | Trimmed -55.0% | $13.01 | $22.24 | +70.9% |
| 75 | AMD on Yahoo Finance (opens in a new tab) | Advanced Micro Devices IncCOM | 0.0% | $3M | 4,510 | New | $409.99 | $534.28 | +30.3% |
| 76 | PCTY on Yahoo Finance (opens in a new tab) | Paylocity Hldg CorpCOM | 0.0% | $3M | 24,683 | Unchanged | $189.40* | $164.24 | -13.3% |
| 77 | INTC on Yahoo Finance (opens in a new tab) | Intel CorpCOM | 0.0% | $3M | 18,320 | New | $101.12 | $90.88 | -10.1% |
| 78 | ASML on Yahoo Finance (opens in a new tab) | ASML Hldg NVN Y REGISTRY SHS | 0.0% | $2M | 825 | Trimmed -99.5% | $1364.85 | $1658.81 | +21.5% |
| 79 | FROG on Yahoo Finance (opens in a new tab) | Jfrog LtdORD SHS | 0.0% | $1M | 14,425 | Unchanged | $42.80* | $84.61 | +97.7% |
Sold out since Q1 2026
- SOLS on Yahoo Finance (opens in a new tab)Solstice Advanced Matls Inc$279M at Q1 2026
- TTMI on Yahoo Finance (opens in a new tab)TTM Technologies Inc$102M at Q1 2026
- JCI on Yahoo Finance (opens in a new tab)Johnson Controls Internation$35M at Q1 2026
- AVGO on Yahoo Finance (opens in a new tab)Broadcom Inc$30M at Q1 2026
- RBRK on Yahoo Finance (opens in a new tab)Rubrik Inc.$24M at Q1 2026
- BTDR on Yahoo Finance (opens in a new tab)Bitdeer Technologies Group$4M at Q1 2026
Estimated, from reported holdings
Quarter by quarter
High-conviction buys (new positions at 3% or more of the portfolio) since Q3 2023: 1. Of 0 with six months of history, — beat the S&P 500 from the filing date.
Source: SEC Form 13F-HR 0000919574-26-005175, compared with the Q1 2026 report. 64 option rows are excluded from weights. Tickers map from CUSIP via OpenFIGI. Estimated returns weight each position’s next-quarter total return (Yahoo Finance adjusted closes) by its quarter-end value and assume no trades. Estimated cost averages daily adjusted closes in each quarter the share count rose, from Q3 2023 onward (* = held at the start of our data). Price is the latest close.
Important information
Form 13F data is delayed. Managers have up to 45 days after each calendar quarter to file, so holdings shown may have changed materially since the report date. 13F reports cover long positions in US-listed equities and certain other securities only; they exclude short positions, most non-US holdings, cash, bonds and private investments, and managers may request confidential treatment for some positions. Options rows are listed in filings but are not counted in the holdings and weights shown here.
Estimated holdings returns, estimated cost and high-conviction results are hypothetical calculations from quarter-end holdings and public prices, assuming no trades between reports. They are not the actual returns or costs of any fund or manager and do not reflect fees, trading, leverage, shorts or cash. Biographies are drawn from cited public sources. This page is for information only and is not individualized investment advice or a recommendation to buy or sell any security. Gulfstream Capital and its clients may hold positions in securities shown.