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Strategic Group

Firms within one industry grouped by similarity in an explicit strategy-relevant representation.

Version
v1 · 2026-10-31 · History
Domain-specific #
14585
Domain group
Professional & Organizational Practice
Origin domain
Organizational & Management Science
Subdomain
Strategic Management → Organizational & Management Science
Aliases
Strategic Groups

Core Idea

A strategic group is a set of firms in one industry grouped by similarity in an explicit strategy-relevant representation.[1] An analyst must identify the industry, the firms, the feature or fitted relationship used to compare them, and the rule that assigns group membership.[1] A group is a way to compare positions inside an industry; it does not by itself prove who competes most directly or who earns more profit.[1][2]

How would you explain it like I'm…

Sorting the Shops

Think of all the ice cream shops in a town. Some sell fancy flavors in small shops, and some sell lots of cheap cones everywhere. If you sort the shops by how they do business, the shops in each pile are a strategic group. Being in the same pile doesn't mean they'll all do equally well.

Companies with Similar Plans

In one industry, like the toy business, companies can make very different choices about how to compete. Some make lots of kinds of toys and spend a lot inventing new ones; others make just a few kinds cheaply. A strategic group is a set of companies in the same industry that are sorted together because their strategies look alike, using a rule the researcher spells out. It helps show that an industry isn't all the same inside. But being in the same group doesn't tell you a company will win or lose, and the closest companies aren't always each other's biggest rivals.

Within-Industry Strategy Clusters

A Strategic Group is a set of firms within one industry grouped by how similar they are on clearly stated strategic measures, such as product range and research spending, or on patterns linking their behavior to performance. The variables and grouping method must be spelled out, so a group is an analytical claim, not a permanent natural category of firm. The idea matters because an industry that looks uniform in overall statistics can contain firms with very different strategies. Research on US brewing grouped firms by similar conduct-performance patterns, while a later US pharmaceutical study grouped firms by market scope and resource commitments. Group membership is a starting point for comparison: the pharmaceutical study found market-share differences between groups but did not establish profitability differences, and the closest firms on a map aren't always the strongest rivals.

 

A Strategic Group is a set of firms within a single industry grouped by similarity in an explicit, strategy-relevant representation. That representation may compare observable commitments, such as product scope and R&D investment, or fitted relationships between conduct and performance, and the chosen variables and grouping rule must be stated. A strategic group is thus an analytic claim about within-industry resemblance, not a permanent natural kind. Its value is in revealing heterogeneity: an industry can look uniform in aggregate statistics while firms occupy distinct strategic postures. Historical US brewing research grouped firms by similarity of fitted conduct-performance relationships, while a later US pharmaceutical study grouped them using industry-specific measures of market scope and resource commitments; both expose intra-industry variation without sharing a universal feature vector or algorithm. Membership is a starting point for comparison, not proof of outcomes: the pharmaceutical study found market-share differences across groups but its published summary did not establish profitability differences. The nearest firms on a strategic map also need not be each other's strongest rivals in every decision.

Scope of Application

The representation can differ with the industry and question.[1] In an early U.S. brewing analysis, the later account by a coauthor describes groups formed from similar fitted relationships between strategic conduct and performance.[1] In a U.S. pharmaceutical analysis, firms were grouped over successive periods using measured market scope and resource commitments.[1] Neither fitted relationships nor one particular list of variables is mandatory for every strategic-group study.[1]

The construct applies to competing firms within an industry.[1] A grouping of customers for marketing decisions is industrial market segmentation, which has a different carrier and purpose.[1][3]

Clarity

A useful group label comes with the industry boundary, observation period, strategy-relevant representation, and assignment rule.[1] Without those details, the same label can hide different firm partitions.[1] The groups may change when the underlying measurements, period or grouping method change.[1]

Manages Complexity

Grouping many firms makes strategic differences within an industry easier to see and compare.[1] The simplification is conditional on the chosen measures; firms in one group need not be identical, and a two-axis picture need not capture the full analysis.[1]

Abstract Reasoning

First define the industry and representation.[1] Then assign firms and compare conduct or outcomes within and between groups.[1] If a firm changes groups, investigate the representation, data, period and assignment rule before attributing the move to changed strategy.[1] Keep outcome tests separate from group formation: the published pharmaceutical summary found between-group market-share differences but did not establish between-group profitability differences.[2]

Knowledge Transfer

The same question—how firms differ inside one industry—can guide analysis in different industries, but the variables and group construction must be justified anew.[1]

The named group is a strict kind of Set and Membership, and assigning its firms presupposes an explicit Representation of strategy or fitted response. Classification and Clustering are related grouping operations, but neither is required in every case.

The named strategic-group construct remains tied to firms and competitive strategy.[1]

Examples

Brewing: A coauthor's later full account says earlier researchers grouped brewers by similarity in fitted conduct–performance relationships.[1] Here the firms are brewers, the representation is the fitted relationship, and the group indicates similar modeled responses, not a known universal profit ranking.[1] The original 1978 paper's publisher abstract confirms the brewing application; its full text was not independently inspected.[4]

Pharmaceuticals: Cool and Schendel measured drug firms' scope and resource commitments and clustered them by period.[1] Here the firms are pharmaceutical competitors, the representation is those strategic measures, and the groups are period-specific positions.[1] The later published abstract supports market-share differences without an established between-group profitability difference.[2]

Relationships to Other Abstractions

Local relationship map for Strategic GroupParents appear above the current abstraction, mutual partners to the right, and children below. Node labels state whether each abstraction is prime or domain-specific; colors identify relation types.Strategic GroupDOMAINPrime abstraction: Representation — presupposesRepresentationPRIMEPrime abstraction: Set and Membership — is a kind ofSet andMembershipPRIME

Current abstraction Strategic Group Domain-specific

Parents (2) — outgoing typed relations

  • Strategic Group is a kind of Set and Membership Prime

    A strategic group is a named set of industry firms with an explicit strategy-relevant membership rule.

  • Strategic Group presupposes Representation Prime

    Strategic-group comparison requires a stated representation of firm strategy or fitted strategic response.

Hierarchy paths (2) — routes to 2 parentless roots

Neighborhood in Abstraction Space

Strategic Group sits in a sparse region of the domain-specific corpus (80th percentile for distinctiveness): few abstractions share its structure, so a faithful description tends to retrieve it precisely.

Family — Competitive Strategy & Market Entry (12 abstractions)

Nearest neighbors

Computed from structural-signature embeddings · 2026-10-31

Not to Be Confused With

  • Customer segments: groups of buyers rather than firms competing within an industry.[3][1]

  • A two-axis map: a display of positions, which does not alone establish a defensible assignment rule.[1]

  • A profit ranking: group membership does not itself establish higher profit.[2]

References

[1] Karel O. Cool and Dan E. Schendel, “Patterns of Competition, Strategic Group Formation and Performance: The Case of the U.S. Pharmaceutical Industry, 1963–1982,” INSEAD working paper 85/26 (1985), author-institution full PDF. Brewing coauthor retrospective: PDF pp.5–6; strategic-group definition and variable dependence: pp.10–12; pharmaceutical measures: pp.18–22; period-specific groups: pp.32–34; repositioning and static-analysis limits: pp.41–42; performance tests: pp.43–45. The full working paper was inspected; this does not claim all details were unchanged in the journal version. registry ↩a ↩b ↩c ↩d ↩e ↩f ↩g ↩h ↩i ↩j ↩k ↩l ↩m ↩n ↩o ↩p ↩q ↩r ↩s ↩t ↩u ↩v ↩w ↩x ↩y

[2] Karel O. Cool and Dan E. Schendel, “Strategic Group Formation and Performance: The Case of the U.S. Pharmaceutical Industry, 1963–1982,” Management Science 33(9) (1987), 1102–1124, DOI: 10.1287/mnsc.33.9.1102. The publisher abstract was inspected for the published market-share and profitability conclusions; journal full text was not independently inspected. registry ↩a ↩b ↩c ↩d

[3] V. Kasturi Rangan, Rowland T. Moriarty and Gordon S. Swartz, “Segmenting Customers in Mature Industrial Markets,” Journal of Marketing 56(4) (1992), 72–82, DOI: 10.1177/002224299205600406. The publisher abstract was inspected for industrial-customer segmentation and marketing decision context; full article not independently inspected. registry ↩a ↩b

[4] Kenneth J. Hatten, Dan E. Schendel and Arnold C. Cooper, “A Strategic Model of the U.S. Brewing Industry: 1952–1971,” Academy of Management Journal 21(4) (1978), 592–610, DOI: 10.5465/255702. The publisher abstract was inspected for the brewing setting and strategic-group application; full article not independently inspected. registry ↩