From Fired Researcher to $13.7 Billion King: How Leopold Aschenbrenner Broke the Hedge Fund World
Leopold Aschenbrenner is a 24-year-old Gen-Z investment savant and former OpenAI researcher.
Propetro Holding Corp. (PUMP)
Market is closed
Sector: Petroleum Refining
Hedge Fund Popularity
Hedge Fund Holdings
Filing Period:
Last updated on based on SEC 13F filings Last update:
| No. | Hedge Fund | Shares | Value | Activity | % Port |
|---|---|---|---|---|---|
| 1. | Sourcerock Group Christian Zann | 7,241,813 | $104,354,525 | +6% | 4.21% |
| 2. | D E Shaw D. E. Shaw | 4,743,553 | $68,354,599 | +25% | 0.04% |
| 3. | Valiant Capital Christopher R. Hansen | 4,042,993 | $58,259,529 | +11% | 3.35% |
| 4. | Arrowstreet Capital Peter Rathjens, Bruce Clarke And John Campbell | 3,449,379 | $49,705,551 | +11% | 0.03% |
| 5. | Philosophy Capital Jacob Rubin | 2,283,573 | $32,906,287 | -42% | 2.02% |
Insider Trading: Purchases See All
| Insider | Price | Amount | Total Value | Remaining Holdings | Date | Form 4 |
|---|---|---|---|---|---|---|
| $4.98 | 4,900 | $24,402.00 | 362,639 | 2025-08-06 | Filing | |
| $4.91 | 2,000 | $9,820.00 | 2,000 | 2025-08-01 | Filing | |
| $6.86 | 4,500 | $30,870.00 | 112,992 | 2024-11-04 | Filing | |
| $8.96 | 1,500 | $13,440.00 | 65,778 | 2023-03-01 | Filing | |
| $8.44 | 2,500 | $21,100.00 | 64,278 | 2023-02-24 | Filing |
Insider Trading: Sales See All
| Insider | Price | Amount | Total Value | Remaining Holdings | Date | Form 4 |
|---|---|---|---|---|---|---|
| $16.66 | 16,600,000 | $276,556,000.00 | 0 | 2026-05-20 | Filing | |
| $10.14 | 17,230 | $174,712.20 | 71,146 | 2025-11-14 | Filing | |
| $10.84 | 27,000 | $292,680.00 | 35,831 | 2025-10-31 | Filing | |
| $10.64 | 6,916 | $73,586.24 | 45,029 | 2025-10-31 | Filing | |
| $4.87 | 75,000 | $365,250.00 | 88,376 | 2025-08-04 | Filing |
Institutional Investors' Holdings
Filing Period:
| No. | Name | Shares | Value | % Port |
|---|---|---|---|---|
| 1. | 8,571,318 | $123,512,692 | 0% | |
| 2. | 6,481,970 | $93,408,072 | 0.02% | |
| 3. | 4,356,508 | $62,777,280 | 0% | |
| 4. | 3,846,880 | $55,433,541 | 0.03% | |
| 5. | 3,176,066 | $45,767,111 | 0% |
News See All
ProPetro Holding Corp. (PUMP) Gets Upgraded by Barclays Post Q1
ProPetro Holding Corp. (NYSE:PUMP) is one of the best small cap stocks to buy for 10x potential. On May 7, Barclays upgraded ProPetro Holding Corp. (NYSE:PUMP) to Overweight from Equal Weight.
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ProPetro Holding Corp. (NYSE:PUMP) Q1 2026 Earnings Call Transcript
Operator: Hello, everyone. Thank you for joining us, and welcome to the ProPetro Holdings First Quarter 2026 Conference Call.
12 High Growth Energy Stocks to Buy Now
Most investors look at energy as a slow, cyclical sector—one that lags during downturns and briefly rallies when oil prices spike.
Why These Energy Stocks are Gaining This Week
The S&P Energy index shot up by 3.38% between February 23 and March 2, compared to gains of $0.64% posted by the overall S&P 500 during the period.
ProPetro Holding Corp. (PUMP): A Bull Case Theory
We came across a bullish thesis on ProPetro Holding Corp. on Guasty Winds Investment Ideas’s Substack by Guasty Winds. In this article, we will summarize the bulls’ thesis on PUMP.
ProPetro Holding Corp. (NYSE:PUMP) Q4 2025 Earnings Call Transcript
Operator: Good day, and welcome to the ProPetro Holdings Corp. Fourth Quarter and Full Year 2025 Conference Call. Please note that this event is being recorded.
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