When the Network Becomes Destiny: How Korea's Record Sidecar Streak Reveals the Retailization Pattern
On 4 August 2026, KOSDAQ closed up 5.88% at 780.72, triggering a buy-side sidecar for the third consecutive session — three in a row had never happened there before. The three-day cumulative gain was 21%. The dominant framing was straightforward: individual investors were rotating out of large-cap semiconductors and into small-cap growth. Then read the flow ledger for the same day. On KOSDAQ, institutions net bought ₩543.4bn. Foreign investors net sold ₩277.2bn. Retail net sold ₩258.6bn. Meanwhile on KOSPI — up only 1.62% after trading as low as 6,080.25 intraday — retail net bought ₩818.6bn, while institutions net sold ₩539.4bn and foreigners ₩369.9bn. The reporting notes retail buying concentrated in the semiconductor names that had dropped more than 8% the previous session. Two things were true at once. Only one made the headline. The path, not the price Relational risk research describes five paths by which network risk is realised. The fifth is retailization : the party facing the...