8368 — Hyakugo Bank — heads into its May 8 earnings report with an interesting split: the stock has surged while short sellers have been steadily adding back positions over the past week.
The price move has been the most eye-catching development. Shares closed at ¥1,811 on April 28, up nearly 7% on the day and 15% over the past month. Close peers were broadly firmer on the same session — 8361 added 6.3% and 7322 rose 6.9% — pointing to a sector-wide bid rather than a stock-specific catalyst. The regional bank cohort appears to be catching a tailwind, though Hyakugo is broadly in line with the pack rather than leading it.
Short positioning tells a more complicated story than the price action alone. SI % of free float has climbed from 0.78% on April 21 to 1.37% on April 28 — almost doubling in a week — after briefly dipping below 1% at the start of the week. That rebound is worth noting given the proximity to the May 8 earnings date. Looking back further, SI peaked well above 2% on April 2 before collapsing sharply, suggesting some shorts were caught wrong-footed during the spring rally and covered hard. The current rebuilding is more tentative, but the direction is clear. The ORTEX short score has edged higher through the week, reaching 31.8 on April 28 from 29.4 on April 21 — still firmly in the middle of the range, nothing extreme.
The borrow market has loosened dramatically from where it was six weeks ago. Cost to borrow ran as high as 3.65% in late March, but has since fallen back to 0.78% — more than a 50% drop over the month. Availability has eased in the same direction: lending-pool utilization dropped from a peak of 18.2% in late March to just 4.2% now, meaning the vast majority of lendable supply is unused. That combination — a cheaper, looser borrow market — removes any immediate squeeze pressure. Shorts rebuilding positions here are doing so in a permissive environment.
The institutional register offers a notable subplot. Goldman Sachs trimmed its holding by around 1.3 million shares to 7.8 million as of April 20, a meaningful reduction from a top-five holder. Ariake Capital — a smaller domestic manager — holds the largest disclosed stake at 5.3% of shares, a position that entered as a new holding as recently as January 2026. Vanguard added modestly, picking up 402,000 shares through March. The mix suggests global passive flow continues to build quietly while some active money is stepping back ahead of the earnings date.
The prior two earnings events — both clustered around the February reporting season — delivered outsized reactions. The February print saw a 6.7% gain on the day and 15% over the five subsequent sessions. A December event produced a much more modest 0.4% move. The asymmetry in those historical reactions underlines that outcomes here can swing widely, and the stock is now carrying 15% of one-month gains into the May 8 release. The setup going into that print — shorts creeping back, borrow costs low, the stock near recent highs — is what to watch.
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