| Metric | Pre‑Event (−5 min) | Event (12 s) | Post‑Event (+5 min) | |--------|-------------------|--------------|----------------------| | Mid‑price change | 0.01 % | +4.30 % | –0.22 % | | Best‑bid depth (MM) | 1.12 bn | 2.42 bn | 1.08 bn | | Best‑ask depth (MM) | 1.10 bn | 1.09 bn | 1.12 bn | | Trade volume (MM) | 0.85 | 3.67 | 0.96 | | Latency (µs) – average | 1,220 | 730 | 1,190 |
The event exhibits a sharp, asymmetric depth expansion on the bid side, accompanied by a significant latency reduction for a subset of participants (average 730 µs vs. market average ≈1.2 ms). missax170829blairwilliamsaforeignexchan exclusive
Foreign‑exchange markets are among the most liquid and continuously operating financial arenas, yet they remain susceptible to micro‑structure anomalies that can momentarily impair price formation. In February 2023, a data‑driven investigation led by Blair William uncovered a striking episode—dubbed “Missax170829”—characterized by: | Metric | Pre‑Event (−5 min) | Event
The present study expands on William’s preliminary report, applying rigorous statistical testing and simulation to evaluate whether Missax170829 represents a market inefficiency, a technological glitch, or a deliberate, albeit compliant, liquidity‑management strategy. The present study expands on William’s preliminary report,
This paper presents a comprehensive examination of the “Missax170829” episode, a highly unusual foreign‑exchange (FX) event documented by Blair William in early 2023. The incident involved an unprecedented intraday price deviation in the EUR/JPY cross, accompanied by a spike in order‑book depth that was later classified as “exclusive” due to its limited visibility to a small cohort of market participants. By integrating high‑frequency tick data, proprietary transaction logs, and a suite of econometric models, we isolate the drivers of the anomaly, assess its impact on market efficiency, and discuss regulatory implications. The findings suggest that the Missax170829 event constitutes a rare instance of coordinated, low‑latency liquidity provision that temporarily distorted price discovery without breaching conventional market‑making norms.