Dalal Street began the June futures & options (F&O) series on Friday, a day after the Nifty50 index ended the May series with a loss of 1,075 points — making it the worst performance in a series since March 2020. The 30-scrip Sensex index lost 3,268.5 points or 5.7 percent during this period.
NSE
ALSO READ: Nifty suffers biggest fall in an F&O series in two years
Rollovers
The Nifty's May-June rollovers are at 78.9 percent, as against a three-month average of 79 percent.
| Month | Rollovers (%) | OI at start of series (crore shares) | FII long exposure in index futures (%) |
| June | 78.9 | 1.13 | 45 |
| May | 78 | 0.85 | 35 |
| April | 82 | 1.23 | 74 |
| March | 77 | 1.1 | 48 |
| February | 75 | 1.03 | 33 |
| January | 79 | 0.96 | 66 |
| December | 83 | 1.05 | 70 |
| November | 82 | 1.04 | 54 |
What does rollover data show?
Rollover is the carrying forward of a derivatives contract close to expiry to the next available series. So a trader closes a position in the existing contract and opens a new position in the next one by bearing a certain cost.
Key triggers for May F&O series
RBI policy review: June 6-8
FOMC meet for economic projections: June 14-15
Inflation data
Crude oil and other commodities
FII flows
Foreign institutional investors' (FII) longs are at 35 percent at the beginning of the May F&O series.
Here's how the 50-scrip index has fared in the May series in the past:
| Series | Nifty change (absolute) | Change (%) |
| June 21 | +453 | +3 |
| June 20 | +799 | +8.4 |
| June 19 | -104 | -0.9 |
Here's how the 50-index has fared in the past few series:
| Series | Nifty change (absolute) |
| May | -1,075 |
| April | -220 |
| March | 1,217 |
| February | -862 |
| January | -94 |
| December 2021 | -332 |
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