Capital Allocation·News & Analysis··1 min read

    The Structural Friction of Index Concentration

    The fragility of the index weighted advance

    Written by Olumide Olusegun, Founder & Managing Director, Splitbox Limited.

    The Structural Friction of Index Concentration
    Nairametrics

    The Structural Friction of Index Concentration.

    Splitbox Journal • What Everyone Missed

    The Ghost Rally of Index Concentration.

    Nominal market expansion is currently a lie. While the Nigerian equities market added N191.77 billion in a single session, this growth is a function of index weighting rather than economic health.

    Market breadth is negative. Thirty-five stocks declined while only twenty-two rose. A few heavyweights like First HoldCo are dragging the index upward while the majority of listed companies lose value.

    The signal is in the turnover. A 19.68 percent drop in volume proves that liquidity is exiting the market. Price gains on falling volume reveal a total absence of conviction.

    Stop using the ASI to measure market health. The advance-decline ratio is the only metric that captures the reality of institutional caution in Lagos.

    Read more founder insights: splitboxltd.com

    — Splitbox Journal

    #SplitboxJournal #CapitalAllocation #NGX #Nigeria #MarketAnalysis #PrivateEquity #CorporateGovernance

    1 min readAdvanced reading levelUpdated 11 Aug 2026