EM FX: When a 'sure thing' isn't, and the importance of liquidity
Been trading EM for a while now, mostly equities, but dipped my toes into EM FX a few times. One experience still sticks with me from about a year and a half ago, involving a smaller, less liquid Asian currency against the USD. The thesis was pretty solid on paper – significant policy divergence, a clear hawkish pivot from their central bank, and domestic economic data that screamed 'strength.' I'd seen similar setups play out well in other, more liquid pairs, so I sized up a bit, confident in what felt like a high-conviction trade.
Everything started well, position moved in my favor, and I was feeling good. Then came a relatively innocuous piece of global news, totally unrelated to the country in question, but it triggered a broader risk-off move. In the more liquid EM currencies like $BRL or $ZAR, you'd see a quick dip and then a recovery or at least a reasonably orderly market. Not here. The bid-ask spread widened out massively, and the liquidity just evaporated. My stop-loss, which was at a perfectly reasonable technical level, got blown through with significant slippage because there simply weren't enough buyers willing to step in at anything close to reasonable prices. The market was basically one-way for a few hours, and when it finally settled, I was out of the trade with a much larger loss than anticipated, only for the currency to eventually resume its upward trend as per my original thesis.
It was a harsh reminder that even the most fundamental conviction means little if the market isn't there to execute your exit plan. My mistake wasn't necessarily the directional call, but severely underestimating the liquidity risk inherent in smaller EM FX pairs, and implicitly, sizing for a more liquid market. Now, any trade involving less liquid assets gets a much more conservative sizing, and I factor in a wider slippage range for stops. The lesson: always respect the market's capacity, or lack thereof, to take the other side of your trade, especially in times of stress.
That's a classic trap, isn't it? Even the most compelling fundamental case can unravel quickly if you can't get in or out efficiently. It really highlights how crucial market structure and liquidity are, especially in EM, often outweighing pure directional conviction.