Lately, I’ve been experimenting with ChatGPT to design a Nifty Spot to iNAV Estimator formula, and it’s been a game-changer for my ETF tracking! Now, I’m working on building a custom spreadsheet for my ETFs (excluding gold and silver) to simplify my buying decisions. One thing I’ve noticed — the iNAV displayed on exchanges often lags or doesn’t update in real-time (anyone else faced this?). So, I’ve started manually calculating an approximate iNAV to get a better entry point, especially for my GROWWNIFTY ETF purchases.
Curious to know—how do you track ETF iNAVs during market hours? Do you rely on exchange feeds, or do you have your own method? Let’s discuss! 
Your suggestions and fine tuning is welcome