13F filer · CIK 923093 ↗
Tudor Investment
You are looking at Q1 2021. See the latest, Q2 2026 →
Reported value
$4.99B
+41% on the quarter before
Positions
1,522
711 new · 489 sold out
Top 10
20.7%
of the value
Est. gain
+$27.7M
on stocks held all quarter
Est. return
+1.5%
on those stocks since Q4 2020
Positions as of Mar 31, 2021, from Tudor Investment's 13F filing with the SEC. A 13F lists a manager's US-listed stocks and options at a quarter end and is filed up to 45 days later, so the fund may hold something else today. It leaves out short positions, cash and holdings outside the US.
Portfolio at a glance
- New
- Added
- Cut
- Same
- Options
The 24 largest positions, 33% of the reported value, each sized by its share, colored by what the fund did with it since Q4 2020. Striped tiles are options.
Largest buys
Since Q4 2020, by estimated size: the change in shares at the quarter-end price, since a 13F gives no trade prices. Percentages are the position's share of the portfolio, before and after.
- SPDR S&P 500 ETF Trust~$234.4MAdded · 2.0% → 6.2%+591,379 shares
- Amex Industrial Select Sector SPDR~$166.8MNew · 0.0% → 3.3%+1,694,000 shares
- Ishares Jp Morgan Usd Emerging Markets Bond ETFPUT~$75.1MNew · 0.0% → 1.5%+690,000 underlying
- Navistar International Corporation~$68.0MAdded · 0.0% → 1.4%+1,543,946 shares
- Alexion Pharmaceuticals IncorporatedPUT~$64.6MNew · 0.0% → 1.3%+422,200 underlying
- Gw Pharmaceuticals -ADR~$60.6MNew · 0.0% → 1.2%+279,500 shares
- Realpage Inc~$55.1MAdded · 0.2% → 1.2%+631,817 shares
- Vaneck Vectors Semiconductor ETF~$53.4MNew · 0.0% → 1.1%+219,102 shares
- AppleCALL~$44.0MNew · 0.0% → 0.9%+360,400 underlying
- Zoom~$43.5MAdded · 0.2% → 1.0%+135,387 shares
Largest sells
Since Q4 2020, by estimated size: the change in shares at the quarter-end price, since a 13F gives no trade prices. Percentages are the position's share of the portfolio, before and after.
- Tiffany & Co New~$108.5MSold out · 3.1% → 0.0%−825,391 shares
- Concho Resources Inc~$57.0MSold out · 1.6% → 0.0%−976,364 shares
- Slack Technologies Inc- Cl A~$52.9MCut · 2.6% → 0.7%−1,302,071 shares
- Eaton Vance Corporation~$39.1MSold out · 1.1% → 0.0%−575,000 shares
- Maxim Integrated Products Incorporated~$31.0MCut · 1.2% → 0.2%−339,615 shares
- Willis Towers Watson Plc~$28.8MSold out · 0.8% → 0.0%−136,868 shares
- Slack Technologies Inc- Cl APUT~$23.2MSold out · 0.7% → 0.0%−550,000 underlying
- Eidos Therapeutics Inc~$20.5MSold out · 0.6% → 0.0%−155,671 shares
- Ishares Msci Brazil ETF - New~$18.6MSold out · 0.5% → 0.0%−502,050 shares
- Natura &Co Holding-ADRPUT~$18.0MSold out · 0.5% → 0.0%−900,000 underlying
Holdings
As of Mar 31, 2021. Changes are in shares against Dec 31, 2020, so a price move alone never reads as a buy or a sale.
| Holding | Value | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| SPDR S&P 500 ETF TrustExchange-Traded Fund · shares +311% · price +6.0% | 6.2% | $309.7M | +$4.3M | ||||||||
| Amex Industrial Select Sector SPDRExchange-Traded Fund · shares New | 3.3% | $166.8M | — | ||||||||
| Alexion Pharmaceuticals IncorporatedEquity · shares +58% · price −2.1% | 1.6% | $80.7M | −$1.1M | ||||||||
| Ishares Jp Morgan Usd Emerging Markets Bond ETFPUTETF Option · shares New | 1.5% | $75.1M | — | ||||||||
| Grubhub IncEquity · shares +6.6% · price −19.2% | 1.5% | $72.5M | −$16.2M | ||||||||
| Navistar International CorporationEquity · shares +4,361% · price +0.2% | 1.4% | $69.5M | +$2,671 | ||||||||
| Liberty Broadband CEquity · shares −0.00% · price −5.2% | 1.4% | $68.9M | −$3.8M | ||||||||
| Alexion Pharmaceuticals IncorporatedPUTEquity Option · shares New | 1.3% | $64.6M | — | ||||||||
| Realpage IncEquity · shares +927% · price −0.0% | 1.2% | $61.0M | −$2,442 | ||||||||
| Gw Pharmaceuticals -ADRDepository Receipt · shares New | 1.2% | $60.6M | — | ||||||||
| AirbnbEquity · shares −17% · price +28.0% | 1.1% | $55.1M | +$12.1M | ||||||||
| Vaneck Vectors Semiconductor ETFExchange-Traded Fund · shares New | 1.1% | $53.4M | — | ||||||||
| C3.aiEquity · shares 0% · price −52.5% | 0.99% | $49.4M | −$54.6M | ||||||||
| ZoomEquity · shares +779% · price −4.7% | 0.98% | $49.1M | −$278,322 | ||||||||
| Xilinx IncorporatedEquity · shares +378% · price −12.6% | 0.95% | $47.5M | −$1.4M | ||||||||
| Varian Medical Systems Inc.Equity · shares +4.6% · price +0.9% | 0.89% | $44.3M | +$364,778 | ||||||||
| AppleCALLEquity Option · shares New | 0.88% | $44.0M | — | ||||||||
| Ishares Phlx Semiconductor ETFExchange-Traded Fund · shares −12% · price +11.8% | 0.86% | $43.0M | +$4.5M | ||||||||
| Ihs Markit LtdEquity · shares New | 0.85% | $42.6M | — | ||||||||
| Ishares China Large-Cap ETFCALLETF Option · shares New | 0.80% | $39.7M | — | ||||||||
| Flir Systems IncorporatedEquity · shares +13,930% · price +28.9% | 0.78% | $39.1M | +$62,338 | ||||||||
| Slack Technologies Inc- Cl AEquity · shares −59% · price −3.8% | 0.74% | $37.0M | −$1.5M | ||||||||
| Amex Energy Select Sector SPDRExchange-Traded Fund · shares New | 0.70% | $34.8M | — | ||||||||
| AppleEquity · shares −21% · price −7.9% | 0.59% | $29.6M | −$2.6M | ||||||||
| Liberty Siriusxm Group - CEquity · shares −14% · price +1.4% | 0.59% | $29.4M | +$400,289 | ||||||||
| Total · 1,522 positions | 100% | $4.99B | +$27.7M |
Price is a stock's reported value over its shares at the quarter end. The estimated gain is the shares held at both quarter ends times the change in that price: shares bought or sold during the quarter add nothing, options are left out, and a stock split is read into the earlier share count and price.
What made money
From Q4 2020 to Q1 2021: 796 stocks held throughout, up $27.7M (+1.5%).
- Airbnb+$12.1M+28%
- Varonis Systems13:1 split+$4.7M+308%
- Ishares Phlx Semiconductor ETF+$4.5M+12%
- B. Riley Financial Inc+$4.4M+28%
- SPDR S&P 500 ETF Trust+$4.3M+6%
- Slack Technologies Inc- Cl A−$1.5M−4%
- Apple−$2.6M−8%
- Liberty Broadband C−$3.8M−5%
- Grubhub Inc−$16.2M−19%
- C3.ai−$54.6M−52%
Estimated as in the holdings table: shares held at both quarter ends times the change in price; options left out, 6 splits read into the share counts.
Reported value by quarter
The total value of each quarter's 13F at that quarter end. It moves with prices as well as with buying and selling. Pick a quarter to see what the fund held then.
Every quarter's filing
| Quarter | Reported value | Filing | |
|---|---|---|---|
| Q2 2026 | Aug 14, 2026 | $71.91B+33% | SEC ↗ |
| Q1 2026 | May 15, 2026 | $53.87B−0% | SEC ↗ |
| Q4 2025 | Feb 17, 2026 | $54.03B−7% | SEC ↗ |
| Q3 2025 | Dec 9, 2025 (amended) | $57.98B+26% | SEC ↗ |
| Q2 2025 | Aug 14, 2025 | $45.92B+53% | SEC ↗ |
| Q1 2025 | May 15, 2025 | $30.10B+15% | SEC ↗ |
| Q4 2024 | Feb 14, 2025 | $26.28B−4% | SEC ↗ |
| Q3 2024 | Nov 14, 2024 | $27.48B+41% | SEC ↗ |
| Q2 2024 | Aug 14, 2024 | $19.52B+24% | SEC ↗ |
| Q1 2024 | May 15, 2024 | $15.72B+27% | SEC ↗ |
| Q4 2023 | Feb 14, 2024 | $12.42B+25% | SEC ↗ |
| Q3 2023 | Nov 15, 2023 | $9.97B+19% | SEC ↗ |
| Q2 2023 | Aug 14, 2023 | $8.38B+30% | SEC ↗ |
| Q1 2023 | May 15, 2023 | $6.46B+28% | SEC ↗ |
| Q4 2022 | Feb 14, 2023 | $5.06B+9% | SEC ↗ |
| Q3 2022 | Nov 14, 2022 | $4.63B+22% | SEC ↗ |
| Q2 2022 | Aug 15, 2022 | $3.81B−11% | SEC ↗ |
| Q1 2022 | May 16, 2022 | $4.27B−29% | SEC ↗ |
| Q4 2021 | Feb 14, 2022 | $5.98B−3% | SEC ↗ |
| Q3 2021 | Nov 17, 2021 (amended) | $6.16B+16% | SEC ↗ |
| Q2 2021 | Aug 16, 2021 | $5.29B+6% | SEC ↗ |
| Q1 2021 | May 17, 2021 | $4.99B+41% | SEC ↗ |
| Q4 2020 | Feb 16, 2021 | $3.54B+54% | SEC ↗ |
| Q3 2020 | Nov 16, 2020 | $2.30B+14% | SEC ↗ |
| Q2 2020 | Aug 14, 2020 | $2.02B+81% | SEC ↗ |
| Q1 2020 | May 15, 2020 | $1.12B−50% | SEC ↗ |
| Q4 2019 | Feb 14, 2020 | $2.23B−23% | SEC ↗ |
| Q3 2019 | Nov 14, 2019 | $2.91B−17% | SEC ↗ |
| Q2 2019 | Aug 14, 2019 | $3.51B+45% | SEC ↗ |
| Q1 2019 | May 15, 2019 | $2.42B−52% | SEC ↗ |
| Q4 2018 | Feb 14, 2019 | $5.06B+27% | SEC ↗ |
| Q3 2018 | Nov 14, 2018 | $3.98B+38% | SEC ↗ |
| Q2 2018 | Aug 14, 2018 | $2.87B−7% | SEC ↗ |
| Q1 2018 | May 15, 2018 | $3.09B−22% | SEC ↗ |
| Q4 2017 | Feb 14, 2018 | $3.94B+0% | SEC ↗ |
| Q3 2017 | Nov 14, 2017 | $3.92B+19% | SEC ↗ |
| Q2 2017 | Aug 14, 2017 | $3.28B+1% | SEC ↗ |
| Q1 2017 | May 15, 2017 | $3.25B−16% | SEC ↗ |
| Q4 2016 | Feb 14, 2017 | $3.88B−9% | SEC ↗ |
| Q3 2016 | Nov 14, 2016 | $4.27B−10% | SEC ↗ |
| Q2 2016 | Aug 15, 2016 | $4.72B+21% | SEC ↗ |
| Q1 2016 | May 16, 2016 | $3.91B | SEC ↗ |