---
title: "Stephen Mandel AI portfolio (13F)"
canonical: "https://supercyclehq.com/investors/stephen-mandel"
type: "investor"
dataAsOf: "2026-08-14"
period: "2026-06-30"
license: "Free to use and quote with attribution to supercyclehq.com. Do not redistribute as a dataset."
disclaimer: "Informational only, not investment advice. The AI Exposure Score is Supercycle's editorial opinion. Agent portfolios are simulated paper portfolios run by AI."
---

# Stephen Mandel: Lone Pine Capital

Founded Lone Pine Capital, one of the most successful Tiger cubs, running concentrated growth equity at scale.

13F for period 2026-06-30, filed 2026-08-14, compared with 2026-03-31. A 13F discloses long US equity positions at quarter end, reported up to 45 days later.

| Measure | Value |
| --- | --- |
| Reported portfolio value | $16.4B |
| In tracked AI stocks | $10.3B (62.9%) |
| Value-weighted AI Exposure Score | 62 |
| Top buildout layer | chip-equipment |

## AI positions

| Ticker | Issuer | Value | Shares | Portfolio % | Change vs prior quarter |
| --- | --- | --- | --- | --- | --- |
| [NBIS](https://supercyclehq.com/stock/nebius-group.md) | NEBIUS GROUP N.V. | $1.2B | 4,258,008 | 7.19% | new |
| [ASML](https://supercyclehq.com/stock/asml-holding.md) | ASML HLDG NV | $1.1B | 569,174 | 6.92% | trimmed (-13.1%) |
| [STX](https://supercyclehq.com/stock/seagate-technology.md) | SEAGATE TECHNOLOGY HLDNGS PL | $965.1M | 1,000,109 | 5.90% | new |
| [AMAT](https://supercyclehq.com/stock/applied-materials.md) | APPLIED MATLS INC | $873.2M | 1,207,737 | 5.34% | new |
| [LIN](https://supercyclehq.com/stock/linde.md) | LINDE PLC | $808.6M | 1,558,081 | 4.94% | new |
| [TER](https://supercyclehq.com/stock/teradyne.md) | TERADYNE INC | $722.4M | 1,493,080 | 4.42% | trimmed (-20.3%) |
| [GLW](https://supercyclehq.com/stock/corning-inc.md) | CORNING INC | $696.8M | 2,728,058 | 4.26% | trimmed (-26.6%) |
| [HUT](https://supercyclehq.com/stock/hut-8.md) | HUT 8 CORP | $666.5M | 5,773,045 | 4.07% | trimmed (-5.0%) |
| [WULF](https://supercyclehq.com/stock/terawulf.md) | TERAWULF INC | $596.4M | 24,144,625 | 3.65% | increased (+21.2%) |
| [MTZ](https://supercyclehq.com/stock/mastec.md) | MASTEC INC | $559.7M | 1,345,157 | 3.42% | trimmed (-12.1%) |
| [APP](https://supercyclehq.com/stock/applovin.md) | APPLOVIN CORP | $537.0M | 1,042,268 | 3.28% | trimmed (-28.9%) |
| [TTMI](https://supercyclehq.com/stock/ttm-technologies.md) | TTM TECHNOLOGIES INC | $512.1M | 2,738,075 | 3.13% | new |
| [STRL](https://supercyclehq.com/stock/sterling-infrastructure.md) | STERLING INFRASTRUCTURE INC | $511.7M | 609,643 | 3.13% | new |
| [AGX](https://supercyclehq.com/stock/argan.md) | ARGAN INC | $294.4M | 368,673 | 1.80% | trimmed (-6.2%) |
| [BTDR](https://supercyclehq.com/stock/bitdeer-technologies.md) | BITDEER TECHNOLOGIES GROUP | $111.4M | 7,020,026 | 0.68% | new |
| [GOOGL](https://supercyclehq.com/stock/alphabet.md) | ALPHABET INC | $77.0M | 215,574 | 0.47% | increased (+14.9%) |
| [TSM](https://supercyclehq.com/stock/taiwan-semiconductor.md) | TAIWAN SEMICONDUCTOR MANUFAC | $48.4M | 101,242 | 0.30% | trimmed (-92.7%) |

Exited since the prior quarter: VST, TLN, ENTG, CIEN, APH.

---

Source: https://supercyclehq.com/investors/stephen-mandel. Data as of 2026-08-14. Prices are end-of-day closes, never live.

Informational only, not investment advice. The AI Exposure Score is Supercycle's editorial opinion. Agent portfolios are simulated paper portfolios run by AI.

Free to use and quote with attribution to supercyclehq.com. Do not redistribute as a dataset.