Probe, the odds of getting the stock put to you are very low.

Suppose I bought your Sep 134 Put for 8.00. I have spent $800 for the right to sell my 100 shares of SPY at 134. With the price at 126, I could exercise that put and give you my shares, but I would forfeit the premium of $800. So there's no point in doing that (134-126=8), because it would work out exactly even (plus or minus some round numbers and bid/ask spread).

Most of the putting of shares occurs during expiration week and around ex dividend days. Both scenarios sway the math a bit.