What Market-Wide Position Limit means, how the F&O ban gets triggered, and what happens to your positions when a stock crosses it.
MWPL = Market-Wide Position Limit. It's the maximum aggregate F&O open interest allowed in any stock, expressed as a percentage of the stock's free-float market cap. NSE sets it stock-by-stock and reviews it monthly.
When a stock's combined futures and options OI crosses 95% of its MWPL, the stock enters the F&O ban period. While in ban, no fresh F&O positions can be opened — only existing positions can be reduced or closed. The ban exits once OI drops back below 80% of MWPL.
MWPL caps how concentrated F&O positioning can become in a single stock. The cap is calculated as a percentage of the stock's free float — the actual share count that's tradable (excluding promoter holdings, government holdings, locked-up investor stakes).
The rule exists to prevent any single stock from becoming so heavily F&O-positioned that a forced unwind could destabilise the cash market. It's a market-stability mechanism, not a punitive one.
MWPL is published per stock on NSE's website and revised periodically. Strota tracks the current utilisation as part of the F&O ban list page.
Existing positions: untouched. You can hold them, reduce them, or close them. Nothing forces you to exit.
New positions: blocked. You cannot open fresh long or short positions in either futures or options of the banned stock. NSE rejects new-position orders at exchange level.
Cash market: unaffected. You can still buy or sell shares of the stock in the cash market. The ban applies only to F&O.
The ban applies uniformly to all participants — retail, FII, DII, prop desks. There's no exception.
Stocks with high retail interest, low free float, or concentrated F&O positioning tend to flip in and out of ban repeatedly. Historical names: IRCTC, RBL Bank, Vodafone Idea, Hindustan Copper.
These are typically high-volatility stocks with active retail and prop trading interest. The ban is rarely a fundamental signal — more often it's a structural signal that positioning has become crowded.
Strota's F&O ban list page tracks entries and exits daily, plus current MWPL utilisation for every banned stock.
Almost certainly the stock is in the F&O ban list. Brokers display this as 'security suspended' or 'MWPL breach' but the underlying reason is the exchange-level rejection. Check the Strota /fno-ban-list page or NSE's daily ban list — if the symbol is there, the rejection is correct and not a broker bug.
No — you can always close existing positions. The ban only blocks opening fresh ones. What you can't do: take fresh profits by re-opening at higher levels, or scale into a winning position. The ban is asymmetric — easy to exit, impossible to grow.
Usually not. F&O ban almost always reflects crowded positioning, not bad news. Stocks with very high retail F&O interest (IRCTC, RBL Bank, Vodafone Idea historically) flip in and out of ban regularly without any fundamental story behind it.
No. The ban applies uniformly to every market participant — retail, FII, DII, prop desks, market makers. There's no institutional carve-out. NSE rejects fresh-position orders at the exchange level before they reach any participant's account.
Because free float is the actual tradable share count — what's available to deliver against F&O positions if forced unwind happened. Including promoter holdings or government stakes would inflate the cap with shares that aren't actually deliverable, defeating the stability purpose of the rule.