The SET Index started 2024 at 1,415. It closed the year at 1,400. A 1.1% loss, in a year when the S&P 500 returned 23%.
That gap is normally where local analysis would shine. Foreign desks don't follow Thai equities closely. Bangkok-based research houses do. They have the relationships, the channel checks, the language access. If anyone should call the SET correctly, it's them.
None of them did.
The targets that didn't survive contact with reality
At the start of 2024, Thailand's major brokers — Asia Plus, KGI, Bualuang, Phillip Securities, Maybank, KGI, Krungsri — all published year-end SET targets. The targets clustered between roughly 1,550 and 1,750. The narrative was uniform: tourism recovery, Fed pivot tailwind, Chinese reopening, infrastructure capex.
By Q3, the SET was below 1,300. Foreign portfolio outflows had accelerated. Earnings revisions in banks and energy were negative. Tourism numbers were beating, but tourism is a small share of the SET's earnings power.
The brokers who started the year at 1,650 quietly moved to 1,500, then 1,400. Most issued their lowered targets in October — by which point the index had already done the moving.
This isn't a Thai problem. It's a structural problem in research. But it does have a Thai flavor.
Why local consensus herds
Three reasons specific to Bangkok's research community:
First, Thai brokers compete for the same institutional client list — a small handful of provident funds, insurance pools, foreign desks, and high-net-worth wealth managers. A research note that diverges from consensus by 20% is a career-defining call. Right or wrong, it gets noticed. Most analysts are not paid to be noticed; they're paid to be defensible.
Second, the relationships matter more than the numbers. A house that downgrades a major listed company too aggressively risks losing access to the IR team. That access is what generates the channel-check edge that justifies the research subscription. The math runs in one direction: you can be late by 6 months and still keep the relationship. You can't be loudly bearish and keep it.
Third, the narrative is set by foreign flows. When Goldman publishes a Thailand strategy note, every local desk reads it that morning. The local view tends to anchor on the foreign view, plus a small local adjustment. The result is convergence around whatever the foreign desks said in December.
What a prediction market would have shown
Imagine a contract that resolved YES if "SET closes 2024 above 1,500." Most local broker targets implied a probability above 70% on that contract.
If a real, capital-backed prediction market had been running, here's what would have happened. By March, Thai retail outflows would have pulled the YES contract toward 50¢. By July, with foreign net selling and weaker earnings, it would have traded at 22¢. By October, when the local brokers finally cut their year-end targets, the contract would already have been at 8¢ for two months.
The prediction market doesn't care about IR relationships. It doesn't fear losing access. It just prices the answer.
What this means for your portfolio
If you're a Thai retail investor reading broker research, you should know what that research is good for and what it isn't. It's excellent for sector micro-detail — earnings models, channel checks, management quality. It's structurally bad at calling broad index direction with conviction.
The right way to use broker research is to read it for the analysis and ignore the headline number. The headline number is a social object. The probability you actually want is the one nobody is publishing.
That's the gap a Thai-language prediction market closes.
The 2025 question
At the start of 2025, the same broker community is publishing year-end SET targets again. The cluster is now around 1,500 to 1,650 — slightly more cautious after 2024's miss, but still bullish.
Will the SET close 2025 above 1,500? You can read the consensus. You can't read the probability — yet. When the market opens, you'll be able to.
And the price you see won't be a publication. It'll be the live aggregate of every Thai investor with capital on the line. That's the only number worth watching.