The NT ratio — the Nikkei 225 divided by TOPIX — is Tokyo’s cheapest leadership gauge, and it was on display on August 21, 2026, when the Nikkei fell while the broad market rose. Here is how to compute it, why price weighting lets a handful of high-priced stocks like Fast Retailing move the spread, what high and low readings signal about market leadership, and how professionals trade the NT spread with OSE futures.
The Nikkei 225 closed Friday at 68,713.80 (+0.59%) on options SQ day, led by Sony, Nintendo and SoftBank Group, while short-term JGB yields climbed on growing speculation of a BOJ move as early as September. The TSE short-selling ratio came in at 40.9% — mid-range, but still defensive.
SQ (Special Quotation) is the settlement price for Nikkei 225 futures and options, computed from the opening auction prints of all 225 constituents on the second Friday of each contract month. Quarterly ‘major SQ’ Fridays — March, June, September, December — produce some of the largest opening volume prints of the year, and much of that turnover reflects settlement-related hedging rather than fresh directional views. Here is how the mechanics work and how to read the numbers.
Short sales recently averaged around 38% of all Tokyo trading value — and that is normal. A practical guide to the TSE’s daily short-selling data: the two regulatory buckets, why a high ratio is not simply bearish, and how to cross-check it against weekly investor flows.