Options · Volatility

Index Range Calculator

Enter today's spot price and ATM IV to calculate the expected weekly or monthly index move, with support and resistance levels at every 0.25 standard deviation.

Options · Volatility

Weekly / monthly expiry index movement calculator

Spot price (current index level)

ATM implied volatility (%)

Days to expiry

Expected move (1 SD, 365-day convention)

±167 pts

Support & resistance, every 0.25 SD

R824,833

R724,792

R624,750

R524,708

R424,667

R324,625

R224,583

R124,542

SPOT24,500

S124,458

S224,417

S324,375

S424,333

S524,292

S624,250

S724,208

S824,167

Enter today's spot price and ATM IV from your broker's options chain. Levels are statistical probability bands, not guaranteed turning points.