0DTE SPX greek behavior - mkt research snapshot pt6

hey everyone - sharing a piece from some recent homework exploring 0DTE SPX options - specifically to show how the greeks behave and some 2026 trends. this is all live options data. note, these are not meant to be end to end research pieces here, they are snippets to share some general concepts, ideas, etc - typically geared towards beginners. 0DTEs are actually a pretty fair part of my book but they're really nuanced to get right. i've been trading them since launch in may of 2020 and have seen some really curious trends, one of them is so far in 2026 most variants are struggling. there are some filters that work really really, but they have only performed well this year - and not previous. that stuff aside, below are some visuals looking first as a single example of a ATM 7550 call from 16 july and how it ran throughout the day, and it's greek profile. newer traders should pay attention to the relationship between moneyness and rates of change. you should also key into the pace of change wrt time. then below there are some 2026 YTD datapoints for a super high level overview of ytd trends. https://preview.redd.it/b80t03dw94eh1.png?width=1239&format=png&auto=webp&s=b732a9dfe08905b9d256db77bbd54b51be18bc21 https://preview.redd.it/mas7udaz94eh1.png?width=1315&format=png&auto=webp&s=63d2a10bcf925646ec6bb100006aafc5ef499716 https://preview.redd.it/mhluii81a4eh1.png?width=1521&format=png&auto=webp&s=b800c34e6840cf3e6aecd3b68ebd490d51f362bf https://preview.redd.it/g54jr493a4eh1.png?width=1445&format=png&auto=webp&s=95ded1be07ca485bd499b0cab801c3537475f60b https://preview.redd.it/q0x5ilw4a4eh1.png?width=1509&format=png&auto=webp&s=41cbd846d618ceaf4f3f1efbcbbadb58ffd1a0cd https://preview.redd.it/hq8o538aa4eh1.png?width=1321&format=png&auto=webp&s=e1d8fde1fccdf63c267c58ce983ea2cf99098e7c [short premium in 0DTE](https://preview.redd.it/5zl1g0gba4eh1.png?width=1622&format=png&auto=webp&s=8dff55d88ae8639ce757e15c9d7607bb0f3fa702) [theta rate of change across DTE](https://preview.redd.it/cm2ratwca4eh1.png?width=1553&format=png&auto=webp&s=eb14623be6169c82ed128655c751ccf31faec547) [lotto here is defined as a .10 delta call](https://preview.redd.it/v5ww5suea4eh1.png?width=1393&format=png&auto=webp&s=06c4bea8604d58fe704c3877f2a25f3f5924ee81) you can check out other small research projects here: \- [https://www.reddit.com/r/options/comments/1uoh494/theta\_decay\_measured\_on\_19\_years\_of\_real\_spy/](https://www.reddit.com/r/options/comments/1uoh494/theta_decay_measured_on_19_years_of_real_spy/) \- [https://www.reddit.com/r/options/comments/1u4dgcz/0dte\_spx\_iron\_condor\_study](https://www.reddit.com/r/options/comments/1u4dgcz/0dte_spx_iron_condor_study) \- [https://www.reddit.com/r/options/comments/1u63m6i/spx\_iron\_fly\_research\_results/](https://www.reddit.com/r/options/comments/1u63m6i/spx_iron_fly_research_results/) \- [https://www.reddit.com/r/options/comments/1u63zqw/qqq\_short\_downside\_puts\_research/](https://www.reddit.com/r/options/comments/1u63zqw/qqq_short_downside_puts_research/) \- [https://www.reddit.com/r/options/comments/1u6s42a/research\_offer\_pt4/](https://www.reddit.com/r/options/comments/1u6s42a/research_offer_pt4/)