Shake Shack Inc (NYSE:SHAK) stock is down 3.1% to trade at $104 at last check, after Piper Sandler downgraded the fast food chain to "neutral" from "overweight," and cut its price objective to $114 from $121. Shares are pulling back from their highest level since May, but still sport a 40.2% year-to-date lead, with familiar support at the $102 region ready to contain any additional losses.What's more, the equity's recent peak comes amid historically low implied volatility (IV), which has been a bullish comb ...