PCR Falls from 1.07 to 0.75: What Has Changed?
In the morning update, the PCR across expiries stood at 1.07, indicating that Put open interest was slightly higher than Call open interest. This suggested a mildly supportive setup, especially as Put writers were active around the 76,000–75,800 zone.
By afternoon, the PCR slipped to 0.75, meaning Call open interest has moved ahead of Put open interest. This indicates that the earlier positive undertone has weakened, with Call-side writing picking up at higher levels. The sharp Call OI addition at the 76,100 strike, combined with the Sensex failing to sustain above its 20-DMA of 76,129.59, makes the 76,100–76,130 zone an immediate hurdle for traders.
At the same time, the max pain remains at 76,000, while Put OI remains strong at 76,000 and 75,800. Hence, the expiry setup is not outright bearish, but it has shifted from mildly positive in the morning to more range-bound and resistance-heavy in the afternoon.
A sustained move above 76,130 may improve the tone again, while a break below 75,800 can tilt the setup in favour of sellers.
Put Side: Support Still Visible Near 75,800–76,000
On the Put side, strong open interest addition continues around the 75,800 PE strike. Open interest at this strike has increased from 55.26 lakh in the morning to nearly 71 lakh by afternoon. This shows that traders are still trying to defend the 75,800 zone.
Fresh open interest addition is also visible at the 76,000 and 75,900 PE strikes, while the highest Put open interest remains concentrated at the 76,000 strike, followed by 75,800.
For traders, this means the 75,800–76,000 zone remains the key support band. A sustained move below 75,800 can weaken the expiry structure and may trigger fresh intraday pressure.
Call Side: 76,100 Becomes Immediate Hurdle
On the Call side, the biggest open interest addition is now seen at the 76,100 CE strike, with nearly 67 lakh open interest added. This is important because the Sensex has struggled near the 20-DMA and has slipped back towards 76,000.
The highest Call open interest concentration, however, remains at the 76,500 strike, making it the larger resistance zone for the day.
For now, the immediate resistance has shifted lower to 76,100–76,130, while 76,500 remains the upper hurdle if the index manages to regain strength.
Key Insight for Traders for Sensex Expiry
Compared with the morning setup, the expiry tone has become less bullish and more range-bound. The fall in PCR from 1.07 to 0.75 shows that Call writers have gained control at higher levels, especially around 76,100.
For the rest of the session, 76,000 is the key level to watch. A sustained move above 76,100–76,130 can bring some strength back, while a fall below 75,800 may tilt the setup in favour of sellers.
As of now, the BSE Sensex expiry setup points to a narrow battle between 76,100 resistance and 75,800 support, with 76,000 acting as the most important level for the day.
Updated as of 11:30 AM IST
The BSE Sensex expiry session on May 27 began on a weak note as the index opened lower at 75,939.86 and soon slipped below the previous day’s low to hit an intraday low of 75,797.01. However, the selling pressure did not sustain for long. Buying interest emerged from lower levels, led by heavyweights such as ICICI Bank and Tata Steel, helping the index recover above the 76,100 mark by 10:30 am.
The recovery is important because the Sensex is now trading close to its 20-DMA, a short-term trend reference point closely watched by traders. A sustained move above this zone can improve intraday sentiment, while failure to hold above it may again invite selling pressure.
What Does Option Data Indicate for BSE Sensex Expiry?
The options data for the BSE Sensex May 27 expiry suggests that 76,000 has become the key battleground for traders.
On the Put (PE) side, heavy open interest addition was seen between the 75,500 and 76,000 strike prices. The sharpest addition was recorded at the 75,800 strike, where open interest rose by 55.26 lakh. However, the highest Put open interest stands at the 76,000 strike, with open interest of 65.84 lakh.
This indicates that traders are building support around the 76,000 to 75,800 zone. If the Sensex manages to stay above 76,000, it may keep the expiry bias mildly positive. However, a slip below 75,800 can weaken the structure and may trigger fresh intraday pressure.
On the Call (CE) side, sizeable open interest addition is visible at the 76,000 strike and above, suggesting resistance at higher levels. The 76,500 strike holds the highest Call open interest of 45.66 lakh, making it an important upside hurdle for the day.
