BSE Tightens Oversight, Adds RRP Semiconductors and 8 More to Weekly Trading Basket
BSE Tightens Grip on Volatile Stocks: RRP Semiconductors Among 9 Added to Weekly Trading Framework
In a bid to curb excessive price volatility and ensure market integrity, the Bombay Stock Exchange (BSE) has introduced additional surveillance measures for select stocks exhibiting abnormal trading patterns. Among the nine companies listed under this new framework is RRP Semiconductors, a stock that has captured market attention with its dramatic price surge in recent months.
The exchange, in its circular issued on Friday, emphasized that these measures are designed to strengthen ongoing efforts to maintain orderly trading conditions and safeguard retail investors from speculative risks.
RRP Semiconductors, which has seen a meteoric rise in its share price, was one of the key inclusions in BSE’s new list. The stock, which traded at around ₹96 in December 2024, has skyrocketed to nearly ₹11,784, marking an unprecedented rally. With a price-to-earnings (P/E) ratio of 2,470 and a book value of ₹12, the valuation appears extremely stretched — raising concerns of possible speculative trading activity.
The stock was already under BSE’s Enhanced Surveillance Measure (ESM) framework, but the latest move tightens restrictions further. The exchange’s new mechanism ensures that such volatile stocks are traded in a controlled manner to prevent potential market manipulation.
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Under the new rule, effective November 10, 2025, companies meeting specific criteria will be restricted to trading only once a week — every Monday (or the first trading day of the week). The eligible securities will also be subject to a 1% price band, significantly limiting daily price movement.
The stocks covered under this surveillance measure are those:
Exclusively listed on BSE under groups X, XT, Z, ZP, ZY, or Y
Trading above ₹100 per share
Having a P/E ratio above 500 or negative
Trading consistently at their upper price band for two consecutive weeks
These parameters aim to identify stocks exhibiting patterns of speculative trading, often characterized by low float, high volatility, and sharp price increases unsupported by fundamentals.
Alongside RRP Semiconductors, eight other companies have been added to the weekly trading basket, including:
According to the BSE circular, the identification of such securities will be conducted on a rolling weekly basis, typically on the last trading day of each week. Review for removal from the list will occur quarterly, with a minimum one-month retention period.
In its statement, the exchange clarified that the new surveillance framework is an extension of existing monitoring mechanisms and will function alongside other regulatory measures.
“In continuation of our endeavour to maintain market integrity and curb excessive price movement in securities listed exclusively on the BSE trading platform, a need has been felt to further strengthen the extant surveillance measures,” the circular stated.
The BSE further emphasized that shortlisting under this framework is not punitive and should not be misconstrued as an adverse action against the companies. Instead, it is a preventive regulatory measure aimed at ensuring fair trading practices.
Over the past few years, the BSE has introduced several multi-tiered surveillance frameworks, including:
Additional Surveillance Measures (ASM) for high-volatility or high-risk stocks
Graded Surveillance Measures (GSM) for fundamentally weak or low-liquidity securities
Enhanced Surveillance Measures (ESM) for exclusive BSE-listed entities showing abnormal activity
The latest weekly trading restriction is yet another layer added to this evolving regulatory landscape, reflecting the exchange’s proactive approach toward investor protection and transparency.
For retail investors, this move serves as a reminder to exercise caution while trading in illiquid or speculative counters. Stocks placed under weekly trading frameworks often show signs of excessive price manipulation, and liquidity constraints can make exit difficult.
Experts suggest that investors focus on fundamentally strong companies and avoid stocks showing unexplained rallies, especially those with high P/E ratios or limited disclosures.
The BSE’s action against RRP Semiconductors and similar stocks underscores its commitment to maintaining a fair, transparent, and stable marketplace — ensuring that speculation does not overshadow fundamentals.
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