Rubicon completes 85% acquisition of Arinna Lifesciences, makes it subsidiary

Listed Co AcquisitionStrategic Transactions View source PDF Explain this filing

RUBICON · price

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Price reactionminutes from the announcement price · days from the prior close

+1.1%Reaction day

₹964.10

prior close

₹970.00

announcement price

After-mkt

timing

Nifty Microcap 250market · index membership as recorded later (tracked since Jun 2026)+1.5%-0.4% vs market

Pharmaceuticals peers, median of 161sector+0.3%+0.8% vs sector

On the reaction day the stock moved 0.4 pts less than Nifty Microcap 250 and 0.8 pts more than its Pharmaceuticals peers, over the same two closes: a difference in percentage points, not a measure of what the filing did.

Minutes after the announcementfrom the announcement price · no benchmark

Stock

+0.2

10m

+0.2

15m

+0.4

30m

+0.6

Sessions after the filingfrom the prior close

StockMarketvs marketSectorvs sector

Reaction day

+1.1+1.5-0.4+0.3+0.8

Next day

+0.6+1.4-0.8+0.8-0.2

+4.6+3.0+1.5+2.2+2.4

-1.5+4.6-6.1+3.1-4.6

-1.6+4.5-6.1+3.8-5.3

-0.4+3.0-3.5+3.7-4.2

-1.3+0.6-1.8+1.1-2.3

15d

-2.1+2.9-5.0+3.0-5.1

+34.3+4.1+30.3+1.9+32.5

+41.0+10.5+30.5+6.7+34.3

+57.5+11.6+45.9+8.9+48.6

UpDownMarket · Nifty Microcap 250Sector · Pharmaceuticals peers, median of 161Pending

Minute windows have no benchmark: there is no intraday index history to compare against.

AI summary

Rubicon Research has completed the secondary acquisition of 85% stake in Arinna Lifesciences Limited on April 30, 2026, under the Share Purchase Agreement. Following this, Arinna Lifesciences becomes a subsidiary of Rubicon Research. This follows the company's earlier intimation dated April 15, 2026, regarding the deal.

Likely market impact

Acquisition expands Rubicon's portfolio. Arinna Lifesciences is now a subsidiary, likely to contribute to revenue and growth from the next quarter onwards.