The Indian defence PSU complex has rerated for 18 months on order-book optimism, GoI capex visibility, and FII positioning that treated the cohort as a structural growth trade. BazaarBaazi's reading: parts of the rerating are durable; parts are not. The Crack Score is the framework we use to time when a name's rerating has front-loaded too far.
What the Crack Score is
The Crack Score is a 0 to 100 reading on how close a defence PSU sits to a meaningful drawdown, defined here as a 20 percent correction inside 90 days. It is not a price target. It is not a recommendation. It is a published structural-stress reading we update weekly and disclose component-by-component.
The four sub-scores
Each name receives a 0 to 25 score across four orthogonal axes. The total Crack Score is the sum.
FII flow exposure (0 to 25). Defence PSUs sit in the top-25 FII overweights in the NIFTY universe. When FII flow turns negative on the broad index, the cohort tends to absorb sells disproportionately because position concentration is asymmetric. We score this on rolling 30-day FII cash flow plus FII derivatives positioning in the sector index. Reading above 18 indicates positioning is stretched.
Order book versus PE (0 to 25). Every defence PSU trades on a multi-year visible order book, but order book at a given confidence is only worth what margin and timing the book converts at. We score this as PE-FY27E divided by implied earnings CAGR through FY29 from the order book. Reading above 18 indicates the multiple has run ahead of the cash-flow visibility.
Margin trajectory (0 to 25). The cohort's recent margin expansion came from a mix of operating leverage on rising volumes and a favourable mix shift toward indigenous content. Both have ceilings. We score this on consensus FY27 margin minus trailing four-quarter margin, normalised by the historical range. Reading above 18 indicates the margin upside is already in the price.
GoI promoter supply overhang (0 to 25). The Government of India holds 60 to 75 percent in the cohort. Divestment OFS announcements are policy-driven, not signal-driven. We score this on news-flow signals around budget-cycle divestment hints, recent OFS history, and tracked DIPAM filings. Reading above 18 indicates an OFS event window inside the next 60 days.
How to read the total
A name's Crack Score interprets as follows.
| Range | Reading | Interpretation |
|---|---|---|
| 0 to 30 | Defcon-5 | Bull leg intact. The cohort can run further. |
| 31 to 60 | Defcon-3 | Caution. The risk of a 20 percent move has elevated above baseline. |
| 61 to 80 | Defcon-2 | Crack risk elevated. The name is structurally stretched on at least two axes. |
| 81 to 100 | Defcon-1 | Imminent leg break. Three or four sub-scores in stretched territory. |
What this framework is not
The Crack Score is not a buy or sell signal. It is not a position size guide. It does not anticipate corporate-action surprises, geopolitical shocks, or order-cancellation events outside the model. Names with low Crack Scores still fall on bad days. Names with high Crack Scores can stay stretched for months.
What it is: an editorial accountability tool. Every score we publish is dated. Every component is shown. Every revision goes in the corrections log. The reader can hold us to the call.
Update cadence
Weekly on Wednesdays, post-close. Component scores recompute on FII data Tuesday close, earnings revisions on consensus update, margin trajectory on quarterly results, OFS overhang on news flow.
Disclaimer
Editorial opinion based on publicly disclosed data. Not investment advice. Aditya Sharma is not a SEBI-registered Research Analyst or Investment Adviser. BazaarBaazi is independent journalism. The author holds no positions in the named instruments. Markets carry risk; consult a SEBI-registered investment adviser for personal decisions.