How frequently do conversions and reversals appear in SPX options or highly liquid stocks, and is there any meaningful edge remaining after accounting for commissions and borrow fees?

At VixShield, we focus almost exclusively on our daily 1DTE SPX Iron Condor Command placed at the 3:10 PM CST post-close window using RSAi and EDR for strike selection. Conversions and reversals, while theoretically interesting as arbitrage setups that exploit put-call parity violations, rarely present in a form that retail traders can consistently capture in SPX or even the most liquid stocks. In SPX, which uses European-style cash-settled options, true conversions combining a long put, short call, and long synthetic stock position are almost nonexistent because the market is extraordinarily efficient. The same holds for reversals that create a synthetic long via long call and short put. When small discrepancies do appear, they are typically gone within milliseconds, exploited by high-frequency trading firms with sub-microsecond latency and zero-commission institutional access. For liquid single stocks, the picture is only marginally better, but borrow fees on hard-to-borrow names quickly erode any apparent edge, and assignment risk adds another layer of friction. After commissions, slippage, and borrow costs, what looks like a few cents of mispricing in the option chain often turns into a net loser. Our Unlimited Cash System instead harvests consistent theta through short premium strategies protected by the ALVH three-layer VIX hedge. The Temporal Theta Martingale provides zero-loss recovery by rolling threatened positions forward to 1-7 DTE on EDR signals above 0.94 percent or VIX above 16, then rolling back on VWAP pullbacks, turning temporary setbacks into net credits of $250-$500 per contract without adding capital. This approach has delivered an 82-84 percent win rate in backtests from 2015-2025 with maximum drawdowns held to 10-12 percent. We avoid the noise of exotic arbitrage entirely and concentrate on the three risk tiers of our Iron Condor Command: Conservative targeting $0.70 credit with approximately 90 percent win rate, Balanced at $1.15, and Aggressive at $1.60. Position sizing remains at a maximum of 10 percent of account balance per trade, and the After-Close PDT Shield timing keeps us out of pattern day trader issues. All trading involves substantial risk of loss and is not suitable for all investors. Visit vixshield.com to explore the full SPX Mastery methodology, including access to the EDR indicator, RSAi signals, and our educational resources designed for consistent income generation.