About Steve Mandel
# Steve Mandel / Lone Pine Capital
Steve Mandel serves as portfolio manager at Lone Pine Capital, a multi-strategy investment firm. As of the Q2 2026 filing submitted August 14, 2026, Mandel's disclosed portfolio contained 34 positions valued at $16.4 billion. The portfolio demonstrates moderate breadth relative to total assets under management, with positions ranging across multiple market capitalizations and geographies.
Mandel's top five holdings represent 31.0% of portfolio value and are concentrated in technology and consumer discretionary equities. Nebius Group N.V. anchors the portfolio at 7.2% of assets, followed by ASML Holding N.V. at 6.9%, Seagate Technology Holdings at 5.9%, Home Depot Inc. at 5.6%, and Applied Materials Inc. at 5.3%. The portfolio's largest sector classification is listed as Unclassified, representing 76.9% of total holdings—reflecting either unlabeled positions or securities outside standard sector taxonomies. This concentration pattern is consistent with a sector rotator investment approach.
Quarter-over-quarter activity in Q2 2026 reflects material portfolio repositioning. Mandel disclosed 13 new position initiations, 15 complete exits, 8 position increases, and 13 position reductions during the period. This level of turnover is consistent with an active trading strategy and indicates significant changes to the portfolio composition relative to the prior quarter. The combination of new entries and exits alongside sizing adjustments in existing positions reflects ongoing capital reallocation.
All data sourced from SEC 13F filings.
Frequently asked questions
- What stocks does Steve Mandel own?
- As of the Q2 2026 13F filing, Steve Mandel disclosed 34 positions. The largest holdings include NBIS (7.2%), ASML (6.9%), STX (5.9%).
- What is Steve Mandel's largest holding?
- NBIS (NEBIUS GROUP N.V.), representing 7.2% of the disclosed portfolio.
- What sectors is Steve Mandel exposed to?
- The portfolio's largest sector exposures are Unclassified (76.9%), Consumer Discretionary (9.8%), Information Technology (6.9%). 7 sectors are represented in total.
- How concentrated is Steve Mandel's portfolio?
- The top 5 holdings represent 31.0% of total portfolio value.
- When did Steve Mandel last file a 13F?
- Steve Mandel filed the most recent Form 13F-HR for the period ending 2026-06-30, dated Aug 14, 2026.
- What changed in Steve Mandel's portfolio last quarter?
- Quarter-over-quarter changes: 13 new positions, 15 exits, 8 increased, 13 reduced.
Steve Mandel
Lone Pine Capital · Long/short growth
- Holdings
- 34
- Turnover (LTM)
- 66%
- Persistence (QoQ)
- 60%
- First 13F
- Q3 2024
Investor Fingerprint
iSteve Mandel
Descriptive snapshot computed from this investor's most recent public 13F filing dated 2026-06-30. Educational research, not investment advice.
- Concentration: 31 (Above Avg.)
- Sizing: 4 (Low)
- Turnover: 66 (High)
- Persistence: 60 (High)
Portfolio DNA
Categorical breakdown from this investor's 13F. Hover any row for the formula.
- DiversifiedModerate
- Even WeightsModerate
- Single-Sector BetVery High
- High TurnoverVery High
- Mostly StableHigh
- Minimal TechModerate
Six descriptive labels derived from public 13F data. Additional axes (Value, Quality, Growth, Dividends) require fundamentals data and ship in v2.
Bets on sectors more than specific names; rotates as themes shift.
Mandel's portfolio is characterized by moderate diversification across 34 holdings with a top-5 concentration of 31%, paired with high portfolio turnover of 65.8% over the last twelve months, indicating active rebalancing. The investor demonstrates a pronounced sector tilt of 60.9 while maintaining relatively balanced position sizing, with approximately 60% of positions persisting quarter-to-quarter despite the elevated trading activity. AI and technology exposure remains minimal at 8, suggesting a broad-based approach across sectors rather than concentration in high-growth technology names.
AI-generated analysis. This summary is produced by an automated language model from public regulatory filings. It may contain errors, omissions, or outdated information, and is provided for educational research only — not as financial, legal, or tax advice, a recommendation, or a solicitation to buy or sell any security.
Investor Macro Outlook™
iPortfolio-positioning signal · 2026-Q2 · based on public filings
Steve Mandel's portfolio shows limited technology sector allocation. with minimal allocation to inflation-sensitive sectors. The overall sector mix is pro-cyclical, with heavier weight in economically sensitive industries. The portfolio shows a growth-oriented tilt (implied growth score: 66/100).
Macro Trend — last 3 quarters
| 2025-Q4 | 2026-Q1 | 2026-Q2 | |
|---|---|---|---|
| Inflation | Bearish | Bearish↑ | Bearish→ |
| GDP | Expanding | Expanding↓ | Expanding↑ |
| Rates | Neutral | Neutral↓ | Neutral→ |
| Energy | Bearish | Bearish→ | Bearish→ |
| Technology | Bullish | Neutral↓ | Low↓ |
| Growth / Value | Growth | Growth↓ | Growth→ |
This analysis is inferred from public filing data and portfolio positioning. It is for informational purposes only and is not financial advice. Scores represent implied macro views based on sector weights and quarter-over-quarter changes in public 13F disclosures — not predictions, buy/sell signals, or guaranteed forecasts.
Investor Inflation & Dollar Outlook™
Portfolio-positioning signal · based on public 13F filings · not investment advice
Inflation
65/100
Key moves: LIN
U.S. Dollar
55/100
Key moves: LIN
Recent portfolio changes show increased exposure to inflation-sensitive assets including LIN. Holdings in energy, commodities, and real assets as a group reflect positioning that has historically corresponded with elevated inflation environments. Dollar-sensitive positioning is broadly balanced, without a strong directional tilt toward either dollar-strength or dollar-weakness assets based on current observable holdings. This analysis is based on public 13F filing data and observable portfolio positioning only. It is for informational purposes only and should not be considered investment advice.
This analysis is based on public filings and portfolio positioning. It is for informational purposes only and should not be considered investment advice. Scores represent implied views inferred from observable 13F sector weights and quarter-over-quarter changes only — not predictions or guaranteed forecasts.
Portfolio Analytics™
Based on latest 13F- NBIS7.2%
- ASML6.9%
- STX5.9%
- HD5.6%
- 382221055.3%
- +1 more
Top 10 Holdings
| # | Stock | % Portfolio | Cumulative |
|---|---|---|---|
| 1 | NBIS NEBIUS GROUP N.V. | 7.2% | 7.2% |
| 2 | ASML ASML HLDG NV | 6.9% | 14.1% |
| 3 | STX SEAGATE TECHNOLOGY HLDNGS PL | 5.9% | 20.0% |
| 4 | HD HOME DEPOT INC | 5.6% | 25.6% |
| 5 | 38222105 APPLIED MATLS INC | 5.3% | 31.0% |
| 6 | MDLN MEDLINE INC | 5.1% | 36.0% |
| 7 | LIN LINDE PLC | 4.9% | 41.0% |
| 8 | TER TERADYNE INC | 4.4% | 45.4% |
| 9 | GLW CORNING INC | 4.3% | 49.6% |
| 10 | CVNA CARVANA CO | 4.2% | 53.9% |
Sector Allocation
- Unclassified76.9%
- Consumer Discretionary9.8%
- Information Technology6.9%
- Materials4.9%
- Communication Services0.8%
- Financial Services0.3%
- Industrials0.2%
+1 more sectors
Portfolio Risk Profile™
ElevatedWeighted across dimensions with sufficient data
Concentration
Moderate- ·Top position NBIS is 7.2% of the portfolio
- ·Top 10 holdings account for 53.9% of value
- ·34 total positions (HHI 0.044)
Sector exposure
No data yet- ·Only 22.9% of portfolio value has a sector classification
- ·Not enough classified holdings to score sector clustering — needs sector backfill
Turnover
High- ·49.9% of portfolio value rotated quarter-over-quarter
- ·13 new positions, 15 full exits
Largest sector weights
The portfolio exhibits elevated structural concentration, with the top 10 holdings representing 53.9% of disclosed equity positions across 34 total holdings. Turnover is notably high at 49.9% quarter-over-quarter value churn, marked by 13 new entries and 15 exits, indicating substantial portfolio rotation within the period.
Derived solely from Steve Mandel's public 13F filings, which disclose long US equity positions only — shorts, options hedges, cash, and non-US holdings are not included. Educational research only, not financial advice.
About
Founder of Lone Pine Capital. Another Tiger Cub. Long-tenured long/short equity manager focused on high-quality compounders.
Lone Pine Capital initiated four significant new positions in Q2 2026, adding approximately $3.8 billion in combined exposure to Nebius Group (NBIS), Seagate Technology (STX), Home Depot (HD), and Applied Materials (AMAT), while exiting its energy sector position in Vistra (VST) worth $930 million. The fund trimmed semiconductor and materials exposure by reducing positions in ASML, Teradyne (TER), Carpenter Technology (CRS), and Corning (GLW), though ASML remained a top holding at $1.1 billion. Existing positions in Medline (MDLN) and Carvana (CVNA) were substantially increased, with CVNA posting a 500% gain and MDLN expanding by 78%. The activity reflects a portfolio rotation toward infrastructure, healthcare, and data center-related technology while de-risking from certain industrial and semiconductor names. Because 13F filings are delayed by up to 45 days, this should not be treated as real-time investment advice. Always do your own research.
AI-generated analysis. This summary is produced by an automated language model from public regulatory filings. It may contain errors, omissions, or outdated information, and is provided for educational research only — not as financial, legal, or tax advice, a recommendation, or a solicitation to buy or sell any security.
Top 10 holdings
Sector exposure
- Unclassified76.9%
- Consumer Discretionary9.8%
- Information Technology6.9%
- Materials4.9%
- Communication Services0.8%
- Financial Services0.3%
- Industrials0.2%
New positions
13- 38222105APPLIED MATLS INCNew
- BTDRBITDEER TECHNOLOGIES GROUPNew
- HDHOME DEPOT INCNew
- IBKRINTERACTIVE BROKERS GROUP INNew
- KGSKODIAK GAS SVCS INCNew
- LINLINDE PLCNew
Opening a new position can suggest the manager sees value or a thesis worth committing capital to. It does not necessarily mean they are bullish on the broader market — concentrated managers add positions infrequently while quants may rotate constantly.
Educational research only. Not financial advice.
Increased
8- CVNACARVANA COIncreased
- GOOGLALPHABET INCIncreased
- MDLNMEDLINE INCIncreased
- NUNU HLDGS LTDIncreased
- PFGCPERFORMANCE FOOD GROUP COIncreased
- USFDUS FOODS HLDG CORPIncreased
Adding to an existing position may indicate higher conviction, scaling into a thesis, or rebalancing toward a target weight. It does not necessarily mean the position is undervalued at the current price.
Educational research only. Not financial advice.
Reduced
13- AGXARGAN INCReduced
- APPAPPLOVIN CORPReduced
- ASMLASML HLDG NVReduced
- BNBROOKFIELD CORPReduced
- CRSCARPENTER TECHNOLOGY CORPReduced
- GLWCORNING INCReduced
Trimming a position may suggest portfolio rebalancing, profit-taking, or risk management. It does not necessarily mean the manager has turned bearish on the underlying company.
Educational research only. Not financial advice.
Sold out
15- Ticker unavailableCUSIP 929160109VULCAN MATLS COSold
- APHAMPHENOL CORPSold
- BKNGBOOKING HOLDINGS INCSold
- BSXBOSTON SCIENTIFIC CORPSold
- CIENCIENA CORPSold
- CLHCLEAN HARBORS INCSold
Fully exiting a position can suggest that the manager's thesis has played out, was wrong, or that capital is being redeployed elsewhere. It does not mean the company is broken — exits are often as much about portfolio fit as about the security itself.
Educational research only. Not financial advice.
Current holdings
Reported portfolio value: $16.4B
Reported values come from public SEC filings and may be delayed up to 45 days. Not investment advice.
Sourced from SEC EDGAR public filings
- NBISNewNEBIUS GROUP N.V.Position value$1.2BPortfolio %7.19%Delta Shares—
- ASMLReducedASML HLDG NVPosition value$1.1BPortfolio %6.92%Delta Shares-13.12%
- STXNewSEAGATE TECHNOLOGY HLDNGS PLPosition value$965.1MPortfolio %5.90%Delta Shares—
- HDNewHOME DEPOT INCPosition value$918.1MPortfolio %5.61%Delta Shares—
- 38222105NewAPPLIED MATLS INCPosition value$873.2MPortfolio %5.34%Delta Shares—
- MDLNIncreasedMEDLINE INCPosition value$827MPortfolio %5.06%Delta Shares77.86%
- LINNewLINDE PLCPosition value$808.6MPortfolio %4.94%Delta Shares—
- TERReducedTERADYNE INCPosition value$722.4MPortfolio %4.42%Delta Shares-20.28%
- GLWReducedCORNING INCPosition value$696.8MPortfolio %4.26%Delta Shares-26.63%
- CVNAIncreasedCARVANA COPosition value$692.5MPortfolio %4.23%Delta Shares499.57%
- HUTReducedHUT 8 CORPPosition value$666.5MPortfolio %4.07%Delta Shares-5.03%
- PFGCIncreasedPERFORMANCE FOOD GROUP COPosition value$654.3MPortfolio %4.00%Delta Shares47.12%
- NUIncreasedNU HLDGS LTDPosition value$630.9MPortfolio %3.86%Delta Shares24.23%
- WULFIncreasedTERAWULF INCPosition value$596.4MPortfolio %3.65%Delta Shares21.20%
- CRSReducedCARPENTER TECHNOLOGY CORPPosition value$593.9MPortfolio %3.63%Delta Shares-47.04%
- MTZReducedMASTEC INCPosition value$559.7MPortfolio %3.42%Delta Shares-12.14%
- APPReducedAPPLOVIN CORPPosition value$537MPortfolio %3.28%Delta Shares-28.85%
- TTMINewTTM TECHNOLOGIES INCPosition value$512.1MPortfolio %3.13%Delta Shares—
- STRLNewSTERLING INFRASTRUCTURE INCPosition value$511.7MPortfolio %3.13%Delta Shares—
- USFDIncreasedUS FOODS HLDG CORPPosition value$502.5MPortfolio %3.07%Delta Shares29.47%
- ONONNewON HLDG AGPosition value$470.4MPortfolio %2.88%Delta Shares—
- LPLAReducedLPL FINL HLDGS INCPosition value$343.4MPortfolio %2.10%Delta Shares-40.53%
- AGXReducedARGAN INCPosition value$294.4MPortfolio %1.80%Delta Shares-6.22%
- BTDRNewBITDEER TECHNOLOGIES GROUPPosition value$111.4MPortfolio %0.68%Delta Shares—
- SHAZNewSHARONAI HOLDINGS INCPosition value$102.4MPortfolio %0.63%Delta Shares—
- GOOGLIncreasedALPHABET INCPosition value$77MPortfolio %0.47%Delta Shares14.94%
- KGSNewKODIAK GAS SVCS INCPosition value$63.5MPortfolio %0.39%Delta Shares—
- VIncreasedVISA INCPosition value$56.9MPortfolio %0.35%Delta Shares78.88%
- IBKRNewINTERACTIVE BROKERS GROUP INPosition value$50.3MPortfolio %0.31%Delta Shares—
- TSMReducedTAIWAN SEMICONDUCTOR MANUFACPosition value$48.4MPortfolio %0.30%Delta Shares-92.71%
- SENewSEA LTDPosition value$47.4MPortfolio %0.29%Delta Shares—
- MCKReducedMCKESSON CORPPosition value$43.7MPortfolio %0.27%Delta Shares-85.25%
- TDGReducedTRANSDIGM GROUP INCPosition value$38MPortfolio %0.23%Delta Shares-20.03%
- BNReducedBROOKFIELD CORPPosition value$33.8MPortfolio %0.21%Delta Shares-92.93%
- Ticker unavailableCUSIP 929160109SoldVULCAN MATLS COPosition value$0Portfolio %0.00%Delta Shares-100.00%
- APHSoldAMPHENOL CORPPosition value$0Portfolio %0.00%Delta Shares-100.00%
- BKNGSoldBOOKING HOLDINGS INCPosition value$0Portfolio %0.00%Delta Shares-100.00%
- BSXSoldBOSTON SCIENTIFIC CORPPosition value$0Portfolio %0.00%Delta Shares-100.00%
- CIENSoldCIENA CORPPosition value$0Portfolio %0.00%Delta Shares-100.00%
- CLHSoldCLEAN HARBORS INCPosition value$0Portfolio %0.00%Delta Shares-100.00%
- COFSoldCAPITAL ONE FINL CORPPosition value$0Portfolio %0.00%Delta Shares-100.00%
- ENTGSoldENTEGRIS INCPosition value$0Portfolio %0.00%Delta Shares-100.00%
- HLTSoldHILTON WORLDWIDE HLDGS INCPosition value$0Portfolio %0.00%Delta Shares-100.00%
- KKRSoldKKR & CO INCPosition value$0Portfolio %0.00%Delta Shares-100.00%
- MASoldMASTERCARD INCORPORATEDPosition value$0Portfolio %0.00%Delta Shares-100.00%
- SPOTSoldSPOTIFY TECHNOLOGY S APosition value$0Portfolio %0.00%Delta Shares-100.00%
- THCSoldTENET HEALTHCARE CORPPosition value$0Portfolio %0.00%Delta Shares-100.00%
- TLNSoldTALEN ENERGY CORPPosition value$0Portfolio %0.00%Delta Shares-100.00%
- VSTSoldVISTRA CORPPosition value$0Portfolio %0.00%Delta Shares-100.00%
Sector breakdown
- Unclassified76.9%
- Consumer Discretionary9.8%
- Information Technology6.9%
- Materials4.9%
- Communication Services0.8%
- Financial Services0.3%
- Industrials0.2%
Filing history
- View on SEC ↗13F-HR · Q2 2026Filed Aug 14, 2026
- View on SEC ↗13F-HR · Q1 2026Filed May 15, 2026
- View on SEC ↗13F-HR · Q4 2025Filed Feb 17, 2026
- View on SEC ↗13F-HR · Q3 2025Filed Nov 14, 2025
- View on SEC ↗13F-HR · Q2 2025Filed Aug 14, 2025
- View on SEC ↗13F-HR · Q1 2025Filed May 15, 2025
- View on SEC ↗13F-HR · Q4 2024Filed Feb 14, 2025
- View on SEC ↗13F-HR · Q3 2024Filed Nov 14, 2024