OSSIAM
Long book
$5.69B
Q1 2026
Positions
388
Top-10 weight
57%
concentration
Last quarter
+35.9%
SPY +14.8%
Turnover
10%
of book per quarter
Strategy in plain words
auto-generated from filingsOSSIAM is an institutional manager, running a $5.69B US long book across 388 positions.
The portfolio is concentrated: the top 10 names carry 57% of the portfolio. Turnover is modest: positions are typically held for years. Current anchor positions: ADVANCED MICRO DEVICES, STE STR SPDR PT S&P 500 ETF, TESLA INC, BERKSHIRE HATHAWAY INC-CL B, APPLE INC.
Over the last 9 quarters its long book ran on average 1.7pp per quarter ahead of the S&P 500, beating the index in 4 of 9 quarters. Signal value of individual moves is limited — treat changes as weak evidence.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+4.5%
Q2 2024
+2.7%
Q3 2024
+3.7%
Q4 2024
-5.6%
Q1 2025
+14.0%
Q2 2025
+8.1%
Q3 2025
+1.9%
Q4 2025
-9.5%
Q1 2026
+35.9%
Sector allocation
Technology 49%
Financials 12%
Industrials 10%
Services media 7%
Consumer discretionary 7%
Healthcare 5%
Energy 2%
Other 2%
Long book by quarter
What does OSSIAM own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| AMD ADVANCED MICRO DEVICES | Technology | 4.0M | $808.3M | 14.2% | +39.7% |
| TSLA TESLA INC | Industrials | 1.0M | $386.0M | 6.8% | +0.1% |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 718.0K | $344.1M | 6.1% | -25.8% |
| AAPL APPLE INC | Technology | 1.0M | $264.9M | 4.7% | +19.5% |
| AVGO BROADCOM INC | Technology | 806.2K | $249.5M | 4.4% | +360.6% |
| AMZN AMAZON.COM INC | Consumer discretionary | 1.0M | $213.2M | 3.8% | -19.2% |
| NVDA NVIDIA CORP | Technology | 1.1M | $188.0M | 3.3% | -22.8% |
| GS GOLDMAN SACHS GROUP INC | Financials | 149.2K | $126.3M | 2.2% | +299.4% |
| PLTR PALANTIR TECHNOLOGIES INC-A | Technology | 638.7K | $93.4M | 1.6% | +16.6% |
| ADBE ADOBE INC | Technology | 375.1K | $91.2M | 1.6% | +14.7% |
| AMAT APPLIED MATERIALS INC | Technology | 187.2K | $64.0M | 1.1% | +33.0% |
| NXPI NXP SEMICONDUCTORS NV | Technology | 319.1K | $62.8M | 1.1% | +6248.1% |
| ADSK AUTODESK INC | Technology | 249.2K | $59.7M | 1.0% | +42.4% |
| FTNT FORTINET INC | Technology | 722.1K | $59.0M | 1.0% | +4.4% |
| CZR CAESARS ENTERTAINMENT INC | Services media | 2.0M | $51.9M | 0.9% | Held |
| XOM EXXON MOBIL CORP | Energy | 304.9K | $51.7M | 0.9% | +359.6% |
| MELI MERCADOLIBRE INC | Services media | 29.0K | $50.1M | 0.9% | -3.2% |
| UBER UBER TECHNOLOGIES INC | Services media | 691.7K | $49.8M | 0.9% | -3.5% |
| CRWD CROWDSTRIKE HOLDINGS INC - A | Technology | 125.2K | $48.9M | 0.9% | -7.5% |
| GOOGL ALPHABET INC-CL A | Technology | 169.5K | $48.7M | 0.9% | +43.5% |
| ULTA ULTA BEAUTY INC | Consumer discretionary | 87.7K | $45.8M | 0.8% | +1.0% |
| ROKU ROKU INC | Communications | 461.1K | $43.6M | 0.8% | Held |
| SPGI S&P GLOBAL INC | Services media | 95.8K | $40.7M | 0.7% | +940.0% |
| AMGN AMGEN INC | Healthcare | 113.5K | $39.9M | 0.7% | +653.9% |
| LIN LINDE PLC | Materials | 79.7K | $39.5M | 0.7% | +1253.6% |
| ISRG INTUITIVE SURGICAL INC | Healthcare | 81.4K | $37.5M | 0.7% | +2.4% |
| SNDK SANDISK CORP | Technology | 58.4K | $37.1M | 0.7% | +13.9% |
| MDB MONGODB INC | Technology | 151.1K | $37.0M | 0.7% | 0.0% |
| ABBV ABBVIE INC | Healthcare | 159.8K | $34.7M | 0.6% | +162.3% |
| TFC TRUIST FINANCIAL CORP | Financials | 730.1K | $33.6M | 0.6% | +2250.8% |
| EOG EOG RESOURCES INC | Energy | 229.3K | $33.1M | 0.6% | +272.0% |
| ALGN ALIGN TECHNOLOGY INC | Healthcare | 189.0K | $32.4M | 0.6% | +31.9% |
| UNH UNITEDHEALTH GROUP INC | Financials | 117.9K | $31.9M | 0.6% | +673.5% |
| QRVO QORVO INC | Technology | 407.5K | $31.5M | 0.6% | -12.0% |
| ABNB AIRBNB INC-CLASS A | Services media | 249.1K | $31.5M | 0.6% | +0.5% |
| NFLX NETFLIX INC | Services media | 318.8K | $30.7M | 0.5% | +7.4% |
| BKNG BOOKING HOLDINGS INC | Industrials | 7.2K | $30.5M | 0.5% | +377.8% |
| DASH DOORDASH INC - A | Services media | 194.5K | $29.2M | 0.5% | -0.6% |
| AZO AUTOZONE INC | Consumer discretionary | 8.6K | $28.9M | 0.5% | +290.4% |
| LITE LUMENTUM HOLDINGS INC | Technology | 39.2K | $27.6M | 0.5% | New |
| SHOP SHOPIFY INC - CLASS A | Technology | 230.3K | $27.3M | 0.5% | -3.1% |
| CNX CNX RESOURCES CORP | Energy | 672.4K | $25.9M | 0.5% | Held |
| CBRE CBRE GROUP INC - A | Real estate | 184.3K | $25.0M | 0.4% | -9.2% |
| DUK DUKE ENERGY CORP | Utilities | 189.5K | $24.8M | 0.4% | +9059.8% |
| TEAM ATLASSIAN CORP-CL A | Technology | 360.0K | $24.6M | 0.4% | +77.2% |
| META META PLATFORMS INC-CLASS A | Technology | 42.9K | $24.5M | 0.4% | -42.8% |
| ONON ON HOLDING AG-CLASS A | Other | 671.5K | $22.8M | 0.4% | +107.6% |
| APLSUSD APELLIS PHARMACEUTICALS INC | — | 556.0K | $22.4M | 0.4% | +28.8% |
| APP APPLOVIN CORP-CLASS A | Technology | 54.5K | $21.7M | 0.4% | +39.1% |
| ESTC ELASTIC NV | Technology | 403.8K | $20.2M | 0.4% | +31.2% |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 14, 2026 | 388 | $5.69B | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 13, 2026 | 388 | $5.01B | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 14, 2025 | 694 | $7.77B | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 13, 2025 | 641 | $8.89B | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 14, 2025 | 617 | $7.16B | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 13, 2025 | 623 | $5.79B | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 13, 2024 | 640 | $5.17B | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 13, 2024 | 639 | $5.28B | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 13, 2024 | 626 | $5.71B | canonical | SEC ↗ |
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