DIAMINESQ - Stock Market Circularshttps://rhnvrm.github.io/stock-market-circulars/tags/diaminesq/Regulatory circulars from NSE, BSE, and SEBI with AI-powered summariesHugo -- gohugo.ioen-usMon, 27 Apr 2026 00:00:00 +0000NSE Additional Surveillance Measure (ASM) - Long-Term ASM Framework Updates effective April 28, 2026https://rhnvrm.github.io/stock-market-circulars/circulars/nse/2026/nse-2026-04-27-fdc34827e8125eda-applicability-of-additional-surveillance-measure-asm/Mon, 27 Apr 2026 00:00:00 +0530https://rhnvrm.github.io/stock-market-circulars/circulars/nse/2026/nse-2026-04-27-fdc34827e8125eda-applicability-of-additional-surveillance-measure-asm/NSE announces inclusion of 5 securities into Long-Term ASM Stage-I and movement of securities across ASM stages, with 100% margin requirement effective April 30, 2026.nsetradinghighhighhighfdc34827e8125edahttps://nsearchives.nseindia.com/content/circulars/SURV73914.zipDIAMINESQMASKINVESTUNIINFOMUKTAARTSPALREDTECEMAMIREALOMNIOSIAHYPERsurveillanceasmlong-term-asmmargin-requirementstrade-for-tradestage-ivltasmDIAMINESQMASKINVESTUNIINFOMUKTAARTSPALREDTECEMAMIREALOMNIOSIAHYPERSummary

NSE’s Surveillance Department (Circular Ref. No. 300/2026, Download Ref No: NSE/SURV/73914) announces updates to the Long-Term Additional Surveillance Measure (LT-ASM) framework effective April 28, 2026. Five securities are newly added to LT-ASM Stage-I, two securities move from Stage-I to Stage-II, and one security moves from Stage-II to Stage-III. A 100% margin requirement applies from April 30, 2026, and Stage-IV securities will be shifted to Trade-for-Trade (BE series) settlement.

Key Points

  • 5 securities added to LT-ASM Stage-I w.e.f. April 28, 2026: DIAMINESQ, MASKINVEST, UNIINFO (moved from ST-ASM), MUKTAARTS (as per BSE), PALREDTEC (as per BSE)
  • 2 securities moved from LT-ASM Stage-I to Stage-II w.e.f. April 28, 2026: EMAMIREAL, OMNI
  • 1 security moved from LT-ASM Stage-II to Stage-III w.e.f. April 28, 2026: OSIAHYPER
  • No securities shortlisted under LT-ASM Stage-IV in this circular
  • 100% margin applicable on all open positions as on April 29, 2026 and new positions from April 30, 2026
  • Securities qualifying under Criteria VII (Stage-IV) will be shifted from EQ series to BE (Trade-for-Trade) series
  • ASM framework operates in conjunction with all other prevailing surveillance measures

Regulatory Changes

This circular updates the LT-ASM framework established under prior circulars NSE/SURV/39265, NSE/SURV/45111, NSE/SURV/46557, NSE/SURV/48506, NSE/SURV/52090, NSE/SURV/63362, and NSE/SURV/64066 (dated October 27, 2018 through September 20, 2024). The stage movements reflect escalation of surveillance scrutiny based on market behavior criteria defined in those foundational circulars.

Compliance Requirements

  • NSE Members: Must ensure 100% margin is collected on all open positions in the listed securities as on April 29, 2026, and for all new positions opened from April 30, 2026 onwards.
  • Members trading Stage-IV securities: Must comply with Trade-for-Trade settlement rules (BE series) from April 30, 2026.
  • Members are reminded that ASM classification is a market surveillance action and should not be interpreted as an adverse corporate action against the concerned company.
  • For queries, members may contact surveillance@nse.co.in.

Important Dates

Date Event
April 27, 2026 Circular issued
April 28, 2026 ASM stage changes take effect (Stage additions and movements)
April 29, 2026 Reference date for open positions subject to 100% margin
April 30, 2026 100% margin requirement effective; Stage-IV securities shifted to Trade-for-Trade (BE series)

Impact Assessment

High impact for traders and investors holding positions in the 8 affected securities. The 100% margin requirement significantly increases the cost of holding or creating positions, likely reducing liquidity and increasing volatility. The potential shift to Trade-for-Trade (BE series) for any Stage-IV securities eliminates netting benefits and requires full settlement of each trade individually, further constraining trading activity. Retail investors in MUKTAARTS and PALREDTEC (flagged via BSE data) and UNIINFO (escalated from Short-Term ASM) should note the increased surveillance risk. The escalation of EMAMIREAL and OMNI to Stage-II and OSIAHYPER to Stage-III signals continued regulatory concern over price/volume behavior in these counters.

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