Intra-day shorts at resistances, mainly RNs of 7540 (market got stuck here for quite some time) and 7550. Compounding to that, a wrong short trade got entered at 7519 levels which quickly went up.
The trades moved only ~10 points before cruising high. It's not a sacrosanct method, but works in intra-day.
European futures have given up gains, expecting more downmove at 1 PM.