Short Volatility

Because the probability is in your favor. Short vol wins most of the time (options are expensive vs what actually happens). Think of insurance companies - they accept the risk of large payouts because they profit from many premiums. The key is proper position sizing so that the occasional large loss doesn't wipe you out.

DEFINITELY start with iron condors. They have defined risk - you know the maximum you can lose before entering. Short straddles have unlimited risk that can devastate a portfolio. Learn and prove profitability with defined-risk strategies before even considering undefined-risk positions.

A realistic target is 1-3% monthly return on capital deployed in short vol, with significant variability. This equates to 12-36% annually, but with the risk of occasional large drawdowns (20-50%+). Returns depend on market conditions - good years can exceed this, bad years can have large losses.

If a short put is assigned, you must buy 100 shares at the strike price. If a short call is assigned, you must sell/deliver 100 shares at the strike price (may create a short stock position if you don't own shares). With iron condors, this is less problematic because your long options provide protection.

You can sell covered calls and cash-secured puts in most IRAs. However, you typically cannot sell naked options or trade strategies requiring margin. Iron condors may be allowed in some IRA accounts since they have defined risk. Check with your specific broker for their IRA options policies.

Options include: (1) Close the entire position and take the loss, (2) Close only the tested side and keep the winning side, (3) Roll the tested side out in time and/or further away for a credit, (4) Roll the untested side closer to collect more credit. Never remove your long wings - that converts to unlimited risk.

Gamma measures how quickly delta changes. Near expiration, options are either clearly ITM or OTM, with ATM options having extremely sensitive delta. A $1 move might change delta from 0.50 to 0.90 in the last few days. This sensitivity creates the dangerous gamma acceleration that makes late-expiration short vol risky.

Selling both (strangles/condors) is most common because it's delta-neutral and profits from stability. Selling only puts has a bullish bias (profits if market stays flat or rises) and is popular. Selling only calls is less common due to unlimited upside risk and the market's long-term upward bias.

Signs of over-leverage: buying power reduction > 50%, total portfolio loss in a 2 standard deviation move > 20%, feeling anxious about positions, any single position > 5% of portfolio risk. Stress test your portfolio with a 10-20% market move to see total impact.

Both have merits. Indices (SPY, SPX) have more liquid options, lower bid-ask spreads, and more stable behavior. Single stocks offer higher premiums but more idiosyncratic risk (earnings, company-specific news). Most professionals prefer index vol for the bulk of short vol exposure.

Methods include: (1) Buying far OTM puts as tail hedges (using a portion of premium collected), (2) Holding VIX calls as portfolio insurance, (3) Strict position sizing to survive any single event, (4) Dynamic hedging to reduce delta as positions move against them, (5) Diversification across underlyings and time. No approach eliminates tail risk entirely.

Research and practice suggest 16 delta (~1 standard deviation) to 30 delta (~0.5 SD). 16 delta gives higher win rate with lower premium; 30 delta gives more premium with lower win rate. Many systematic funds use 16 delta as the sweet spot between premium and probability. The optimal depends on your specific risk tolerance and management style.

In equity markets, puts typically have higher IV than equidistant calls (skew). This means short puts collect more premium per dollar of risk than short calls. Some traders exploit this by selling puts more aggressively. However, skew exists because downside events are more severe - the extra premium compensates for real asymmetric risk.

Most dangerous: (1) Low VIX transitioning to high VIX (regime change), (2) Correlation spike events where diversification fails, (3) Gap moves that skip through stops and strikes, (4) Extended IV expansion where you expected mean reversion. Historically, these conditions appeared in 2008, 2011, 2015, 2018, and 2020.

Requirements: (1) Use historical option prices, not synthetic calculations, (2) Include realistic transaction costs ($0.50-1.00 per contract), (3) Include slippage, especially on 4-leg trades, (4) Test across regimes including 2008-2009 and 2020, (5) Account for early assignment, (6) Model margin requirements. Backtests without these elements significantly overstate performance.