CIK: 0001521001
Total reported value
$38.6B
Reporting period: 2026-03-31 · Number of holdings: 1428
Parallax Volatility Advisers, L.P. disclosed 1428 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $38.6B and a quarterly turnover rate of 46.1%.
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Parallax Volatility Advisers, L.P.'s disclosed holdings carry a Herfindahl concentration index of 0.063 — mathematically equivalent to about 16 equally-sized positions, well below its 1428 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 6.87), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 44% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Trim TSLA
-66.0% -$1.1B
Add IWM
+8.0% $145.0M
Add XLF
+11.5% $97.8M
Trim AXP
-82.1% -$487.5M
Trim AVGO
-74.8% -$489.1M
Trim META
-43.3% -$604.0M
Parallax's 13F reveals a coordinated drawdown across its top holdings—SPY, TSLA, META, NVDA, GLD—all being trimmed in the same quarter. This is not capital rotation into new opportunities; it is a systematic de-risking that prioritizes capital preservation over alpha generation, consistent with a volatility manager reducing long exposure ahead of anticipated spikes.
The simultaneous reduction of equity beta (SPY), high-momentum tech, and gold signals a bet on a regime shift into rising volatility and liquidity contraction, where long-volatility strategies are intended to offset equity losses. The opposing thesis is a sustained melt-up that punishes cash drag and early profit-taking, leaving this portfolio structurally underperforming in a low-volatility expansion.
Despite a 766-position facade of diversification, the portfolio's structural vulnerability is its 20.7% SPY weighting—a single-ETF anchor that perfectly correlates with the very tech names being trimmed. This contradictory posture means a broad market selloff would hammer both the remaining ETF and the cut positions simultaneously, effectively concentrating risk at the index level while nominally spreading bets across hundreds of names.
This summary was generated by AI from publicly filed SEC data and reflects historical holdings only — it is not a recommendation to buy or sell.
Showing top 200 holdings (of 1428 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 20.69% | -0.67% | -22.77% | |
| 2 | QQQ | Invesco Qqq Trust Series 1 | ETF-Tech | 11.13% | — | +8.04% | |
| 3 | IWM | Ishares Russell 2000 ETF | ETF-Small Cap | 4.63% | +1.40% | +8.03% | |
| 4 | XLF | Ss Financial Select Sector | ETF-Other | 4.37% | +1.24% | +11.49% | |
| 5 | NVDA | Nvidia CORP | Stock-Tech | 2.12% | -0.41% | -31.84% | |
| 6 | SMH | Vaneck Semiconductor ETF | ETF-Other | 1.75% | +0.63% | +11.46% | |
| 7 | GLD | Spdr Gold Shares | ETF-Commodities | 1.74% | -0.46% | -44.79% | |
| 8 | META | Meta Platforms Inc-class A | Stock-Comm Services | 1.52% | -0.82% | -43.26% | |
| 9 | AMZN | Amazon.com INC | Stock-Consumer Disc | 1.28% | — | -9.04% | |
| 10 | TSLA | Tesla INC | Stock-Consumer Disc | 1.23% | -1.97% | -66.02% | |
| 11 | XLE | Ss Energy Select Sector | ETF-Other | 1.21% | +0.66% | +33.53% | |
| 12 | HYG | Ishr Ibx Usd Hiyld Cb Etf-ui | ETF-High Yield | 1.21% | +0.80% | +125.76% | |
| 13 | AAPL | Apple INC | Stock-Tech | 1.21% | -0.31% | -35.43% | |
| 14 | IBIT | Ishares Bitcoin Trust ETF | ETF-Crypto | 1.03% | +0.55% | +89.77% | |
| 15 | EFA | Ishares Msci Eafe ETF | ETF-Other | 0.84% | — | -2.70% | |
| 16 | MSTR | Strategy INC | Stock-Tech | 0.81% | — | -3.36% | |
| 17 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 0.80% | -0.73% | -56.56% | |
| 18 | CRWV | Coreweave Inc-cl A | Stock-Tech | 0.80% | — | -18.75% | |
| 19 | SLV | Ishares Silver Trust | ETF-Commodities | 0.79% | -0.11% | -36.89% | |
| 20 | C | Citigroup INC | Stock-Financials | 0.78% | — | -11.12% | |
| 21 | CVX | Chevron CORP | Stock-Energy | 0.74% | +0.57% | +165.24% | |
| 22 | AMD | Advanced Micro Devices | Stock-Tech | 0.73% | — | +31.41% | |
| 23 | GDX | Vaneck Gold Miners ETF | ETF-Commodities | 0.70% | +0.47% | +111.61% | |
| 24 | NFLX | Netflix INC | Stock-Comm Services | 0.69% | — | -1.81% | |
| 25 | EEM | Ishares Msci Emerging Market | ETF-Emerging Markets | 0.67% | — | -26.01% | |
| 26 | ORCL | Oracle CORP | Stock-Tech | 0.67% | -0.22% | -24.11% | |
| 27 | MSFT | Microsoft CORP | Stock-Tech | 0.60% | -0.36% | -38.00% | |
| 28 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 0.59% | — | -20.69% | |
| 29 | BAC | Bank Of America CORP | Stock-Financials | 0.56% | — | -22.02% | |
| 30 | BABA | Alibaba Group Holding-sp Adr | Stock-Consumer Disc | 0.55% | -0.10% | -24.11% | |
| 31 | BA | Boeing Co/the | Stock-Industrials | 0.55% | -0.21% | -45.67% | |
| 32 | JPM | Jpmorgan Chase & Co | Stock-Financials | 0.50% | -0.13% | -37.11% | |
| 33 | V | Visa Inc-class A Shares | Stock-Financials | 0.49% | -0.15% | -32.96% | |
| 34 | NEE 7.375 02-15-29 | Nextera Energy INC | Stock-Utilities | 0.47% | +0.47% | NEW | |
| 35 | MU | Micron Technology INC | Stock-Tech | 0.46% | — | -34.33% | |
| 36 | GS | Goldman Sachs Group INC | Stock-Financials | 0.44% | — | -1.37% | |
| 37 | XLI | Ss Industrial Select Sector | ETF-Other | 0.43% | — | +11.26% | |
| 38 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 0.43% | -0.28% | -58.09% | |
| 39 | XOM | Exxon Mobil CORP | Stock-Energy | 0.42% | — | -16.79% | |
| 40 | XOP | Ss Spdr S&p Og Exp & Prod | ETF-Other | 0.41% | +0.38% | +798.53% | |
| 41 | AAL | American Airlines Group INC | Stock-Industrials | 0.39% | — | -13.41% | |
| 42 | UBER | Uber Technologies INC | Stock-Industrials | 0.38% | -0.11% | -36.59% | |
| 43 | COIN | Coinbase Global INC -class A | Stock-Financials | 0.37% | -0.17% | -38.62% | |
| 44 | AVGO | Broadcom INC | Stock-Tech | 0.37% | -0.88% | -74.75% | |
| 45 | KRE | Ss Spdr S&p Regional Bank | ETF-Other | 0.37% | — | -2.12% | |
| 46 | DAL | Delta Air Lines INC | Stock-Industrials | 0.36% | — | -11.33% | |
| 47 | INTC | Intel CORP | Stock-Tech | 0.35% | — | -19.81% | |
| 48 | WMT | Walmart INC | Stock-Consumer Staples | 0.35% | — | -22.22% | |
| 49 | IBM | Intl Business Machines CORP | Stock-Tech | 0.35% | — | +28.05% | |
| 50 | FCX | Freeport-mcmoran INC | Stock-Materials | 0.34% | — | -2.24% |
Performance for Q3 2026
+3.1%
Performance Last 4 Quarters
+20.2%
Based on 87% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 1428 | $38.6B | 46 | |
| 2025-12-31 | 1605 | $50.7B | 49 | |
| 2025-09-30 | 1573 | $65.9B | 75 | |
| 2025-06-30 | 1527 | $44.4B | 0 | |
| 2025-03-31 | 1518 | $36.9B | 100 | |
| 2024-12-31 | 1989 | $51.6B | 0 | |
| 2024-09-30 | 1989 | $54.9B | 0 | |
| 2024-06-30 | 1943 | $46.5B | 0 | |
| 2024-03-31 | 1762 | $44.7B | 0 | |
| 2023-12-31 | 2118 | $49.0B | 0 | |
| 2023-09-30 | 2242 | $44.8B | 0 | |
| 2023-06-30 | 2322 | $45.9B | 0 | |
| 2023-03-31 | 2655 | $48.9B | 0 | |
| 2022-12-31 | 2827 | $64.4B | 0 | |
| 2022-09-30 | 3093 | $64.7B | 0 | |
| 2022-06-30 | 2886 | $105.1B | 0 | |
| 2022-03-31 | 2839 | $191.6B | 0 | |
| 2021-12-31 | 13532 | $46.6B | 0 | |
| 2021-09-30 | 16486 | $54.5B | 0 | |
| 2021-06-30 | 28023 | $73.0B | 76 | |
| 2021-03-31 | 25295 | $44.9B | 100 | |
| 2020-12-31 | 29999 | $36.1B | 100 | |
| 2020-09-30 | 113217 | $135.0B | 51 | |
| 2020-06-30 | 86836 | $85.5B | 35 | |
| 2020-03-31 | 57116 | $77.8B | 44 | |
| 2019-12-31 | 37347 | $86.7B | 36 | |
| 2019-09-30 | 40517 | $88.9B | 100 | |
| 2019-06-30 | 41521 | $91.8B | 0 | |
| 2019-03-31 | 33144 | $87.8B | 49 | |
| 2018-12-31 | 35521 | $75.6B | 49 | |
| 2018-09-30 | 21886 | $81.9B | 35 | |
| 2018-06-30 | 6682 | $70.7B | 42 | |
| 2018-03-31 | 6100 | $74.4B | 40 | |
| 2017-12-31 | 7871 | $73.6B | 39 | |
| 2017-09-30 | 6319 | $60.6B | 42 | |
| 2017-06-30 | 7439 | $51.6B | 35 | |
| 2017-03-31 | 14945 | $48.5B | 55 | |
| 2016-12-31 | 12953 | $51.1B | 50 | |
| 2016-09-30 | 13793 | $54.0B | 37 | |
| 2016-06-30 | 13825 | $50.7B | 47 | |
| 2016-03-31 | 16316 | $45.6B | 44 | |
| 2015-12-31 | 19796 | $49.2B | 34 | |
| 2015-09-30 | 20950 | $44.9B | 37 | |
| 2015-06-30 | 16474 | $47.4B | 45 | |
| 2015-03-31 | 23789 | $42.3B | 66 | |
| 2014-12-31 | 34513 | $34.3B | 46 | |
| 2014-09-30 | 24753 | $31.5B | 60 | |
| 2014-06-30 | 20129 | $24.2B | 66 | |
| 2014-03-31 | 16766 | $17.0B | 62 | |
| 2013-12-31 | 16670 | $20.6B | 45 | |
| 2013-09-30 | 15909 | $19.0B | 50 | |
| 2013-06-30 | 12750 | $21.4B | 0 |
Parallax Volatility Advisers, L.P.'s most significant position changes for 2026-03-31: New buy: Nextera Energy INC (NEE 7.375 02-15-29); Trim: Tesla INC (TSLA) — shares -66.02%; Add: Ishares Russell 2000 ETF (IWM) — shares +8.03%; Add: Ss Financial Select Sector (XLF) — shares +11.49%; Trim: American Express Co (AXP) — shares -82.09%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | IWM | Ishares Russell 2000 ETF | +1.4% | +8.03% | Add |
| 2 | XLF | Ss Financial Select Sector | +1.2% | +11.49% | Add |
| 3 | HYG | Ishr Ibx Usd Hiyld Cb Etf-ui | +0.8% | +125.76% | Add |
| 4 | XLE | Ss Energy Select Sector | +0.7% | +33.53% | Add |
| 5 | SMH | Vaneck Semiconductor ETF | +0.6% | +11.46% | Add |
| 6 | CVX | Chevron CORP | +0.6% | +165.24% | Add |
| 7 | IBIT | Ishares Bitcoin Trust ETF | +0.6% | +89.77% | Add |
| 8 | GDX | Vaneck Gold Miners ETF | +0.5% | +111.61% | Add |
| 9 | XOP | Ss Spdr S&p Og Exp & Prod | +0.4% | +798.53% | Add |
| 10 | COP | Conocophillips | +0.3% | +312.09% | Add |
| 11 | BABA | Alibaba Group Holding-sp Adr | -0.1% | -24.11% | Trim |
| 12 | MS | Morgan Stanley | -0.1% | -49.19% | Trim |
| 13 | SLV | Ishares Silver Trust | -0.1% | -36.89% | Trim |
| 14 | UBER | Uber Technologies INC | -0.1% | -36.59% | Trim |
| 15 | ARM | Arm Holdings Plc-adr | -0.1% | -65.66% | Trim |
| 16 | JPM | Jpmorgan Chase & Co | -0.1% | -37.11% | Trim |
| 17 | WFC | Wells Fargo & Co | -0.1% | -51.46% | Trim |
| 18 | QCOM | Qualcomm INC | -0.1% | -43.39% | Trim |
| 19 | XYZ | Block INC | -0.1% | -76.06% | Trim |
| 20 | V | Visa Inc-class A Shares | -0.2% | -32.96% | Trim |
| 21 | COIN | Coinbase Global INC -class A | -0.2% | -38.62% | Trim |
| 22 | CMG | Chipotle Mexican Grill INC | -0.2% | -90.15% | Trim |
| 23 | NET | Cloudflare INC - Class A | -0.2% | -69.66% | Trim |
| 24 | GE | General Electric | -0.2% | -76.50% | Trim |
| 25 | SNOW | Snowflake INC | -0.2% | -46.88% | Trim |
| 26 | BA | Boeing Co/the | -0.2% | -45.67% | Trim |
| 27 | ORCL | Oracle CORP | -0.2% | -24.11% | Trim |
| 28 | VRT | Vertiv Holdings Co-a | -0.2% | -86.67% | Trim |
| 29 | BKNG | Booking Holdings INC | -0.2% | -75.93% | Trim |
| 30 | APO | Apollo Global Management INC | -0.2% | -55.24% | Trim |
| 31 | GEV | GE Vernova INC | -0.2% | -83.35% | Trim |
| 32 | VST | Vistra CORP | -0.2% | -76.72% | Trim |
| 33 | UNH | Unitedhealth Group INC | -0.3% | -76.43% | Trim |
| 34 | PDD | Pdd Holdings INC | -0.3% | -89.41% | Trim |
| 35 | ABNB | Airbnb Inc-class A | -0.3% | -88.78% | Trim |
| 36 | TSM | Taiwan Semiconductor-sp Adr | -0.3% | -58.09% | Trim |
| 37 | AAPL | Apple INC | -0.3% | -35.43% | Trim |
| 38 | HOOD | Robinhood Markets INC - A | -0.3% | -72.65% | Trim |
| 39 | MSFT | Microsoft CORP | -0.4% | -38.00% | Trim |
| 40 | NVDA | Nvidia CORP | -0.4% | -31.84% | Trim |
| 41 | GOOG | Alphabet Inc-cl C | -0.4% | -74.31% | Trim |
| 42 | GLD | Spdr Gold Shares | -0.5% | -44.79% | Trim |
| 43 | CVNA | Carvana Co | -0.5% | -81.82% | Trim |
| 44 | SPY | Ss Spdr S&p 500 ETF Trust-us | -0.7% | -22.77% | Trim |
| 45 | GOOGL | Alphabet Inc-cl A | -0.7% | -56.56% | Trim |
| 46 | META | Meta Platforms Inc-class A | -0.8% | -43.26% | Trim |
| 47 | AVGO | Broadcom INC | -0.9% | -74.75% | Trim |
| 48 | AXP | American Express Co | -0.9% | -82.09% | Trim |
| 49 | TSLA | Tesla INC | -2% | -66.02% | Trim |
| 50 | NEE 7.375 02-15-29 | Nextera Energy INC | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-17 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-14 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-15 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-14 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-14 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-15 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-14 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-15 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-27 | Amendment | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-21 | Amendment | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-17 | Amendment | View on EDGAR |
| 2022-06-30 | 2022-08-15 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-16 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-14 | Amendment | View on EDGAR |
| 2021-12-31 | 2022-02-14 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-14 | Amendment | View on EDGAR |
| 2021-09-30 | 2021-11-15 | Amendment | View on EDGAR |
| 2021-09-30 | 2021-11-15 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-15 | Amendment | View on EDGAR |
| 2021-06-30 | 2021-08-16 | Amendment | View on EDGAR |
| 2021-06-30 | 2021-08-16 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-14 | Amendment | View on EDGAR |
| 2021-03-31 | 2021-05-14 | Amendment | View on EDGAR |
| 2021-03-31 | 2021-05-14 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-16 | Amendment | View on EDGAR |
| 2020-12-31 | 2021-02-16 | Amendment | View on EDGAR |
| 2020-12-31 | 2021-02-16 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-13 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-14 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-15 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-14 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-09-25 | Amendment | View on EDGAR |
| 2019-06-30 | 2019-08-14 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-15 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-14 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-14 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-14 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-15 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-14 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-14 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-14 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-15 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-14 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-14 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-15 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-16 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-16 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-16 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-14 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-15 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-17 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-26 | Amendment | View on EDGAR |
| 2014-09-30 | 2014-11-14 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-14 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-15 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-28 | Amendment | View on EDGAR |
| 2013-12-31 | 2014-02-14 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-14 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-14 | 13F-HR | View on EDGAR |
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