Why my SGX market timing kept backfiring
Most of my failed SGX trades did not begin with a complicated forecast. They began with a familiar urge: sell after a rally, buy after a sharp fall, then decide the move had come too late. I watched Singapore prices around my Australian workday and repeatedly turned short-term volatility into long-term cash-flow decisions.
These were my mistakes in timing the market on SGX, and what I learned from them. I am not documenting a proven strategy or professional financial advice. I am recording how FOMO, loss aversion, currency movements and poor planning affected my returns, along with the routine that now keeps emotions out of most orders.
Why I tried to outsmart the SGX
I approached the Singapore market because I wanted exposure beyond the commodity-heavy ASX 200, with its heavy weighting toward miners, banks and other Australian businesses. I also enjoyed researching Singaporean companies, IPOs and dividend announcements. That research became part of my tracking background, where financial observations are treated as a personal record rather than a prediction.
My timing process was straightforward but flawed. I would wait for a correction, place a buying order, then reduce the position if prices fell again. During rallies, I would take profits after a few green sessions because I assumed the move was becoming excessive. A moving average or a positive headline could reinforce the decision, even when my original investment thesis had not changed.
The Singapore market made those guesses look reasonable. The Straits Times Index includes large Singapore banks with substantial operations, while individual SGX shares can move sharply after earnings or announcements. I focused on those dramatic moves and ignored the concentrated nature of the STI. A few well-timed trades could make bad market timing appear successful until an ordinary sequence of gains and losses exposed it.
The patterns that cost me money
The first pattern was selling too soon. I would make a sound purchase, enjoy a rally and then take the gain before the company could deliver longer-term growth. The trade felt successful because my account balance was higher, but I was measuring success against my entry price rather than the purpose of the investment. Dividends and reinvestment were often sacrificed simply because I wanted the uncertainty to disappear.
The second pattern was buying too aggressively during a decline. I sometimes treated a falling share as a bargain without checking whether its business outlook had changed. When an SGX IPO weakened after listing, for example, my instinct was to average down. Each additional purchase made the original decision harder to reverse. An AUD-based investor also feels the Singapore dollar movement: a weaker SGD against AUD can deepen an unrealised loss in the home currency.
Checking prices too often made everything worse. Short-term movement became more important than company fundamentals, and I sometimes placed an order while frustrated rather than while evaluating the available evidence. The SGX closing bell also falls during the evening in Sydney and Melbourne, which made it easy to trade after a long Australian day and then revisit the decision the following morning with a different mood.
The same urgency appeared in my personal administration. My write-up of a missed CPF deadline showed how I could turn a fixed date into an emergency by leaving it unattended. SGX trading felt different because each trade had a fluctuating price, yet both problems shared the same root: reacting late and treating a deadline as negotiable.
The routine that replaced my guesswork
I now start with a short written investment policy. It records my allocation, time horizon, available cash and the purpose of each holding. I decide whether new money will be invested immediately or held for a scheduled purchase. This does not remove uncertainty, but it prevents excitement or disappointment from rewriting the plan every day.
For larger purchases, I use dollar-cost averaging across predetermined dates instead of searching for the perfect dip. For an individual SGX share, I define what the holding is intended to provide, which evidence would change that view and when I will review the decision. Limit orders help where appropriate, but they are tools for controlling execution rather than substitutes for research.
Regular reviews have also reduced impulsive trades. I compare my results with the benchmark I chose and record the reason for buying, the all-in cost and the subsequent decision. Even my durian price checks are more useful when they follow a consistent method. Tracking does not predict the next durian price, just as investment tracking should not pretend to predict tomorrow’s SGX close.
SGX and ASX choices for Australians
An Australian investor needs to account for more than the quoted share price. Some brokerage accounts display the ASX and SGX in AUD, while the underlying transaction occurs in SGD. The exchange rate, conversion spread, brokerage and Singapore dividend documents can all influence the final return. I now calculate the home-currency cost before placing an order rather than judging performance only in dollars.
Trading hours are another practical difference for people in Sydney and Melbourne. The SGX runs during Singapore’s daytime, while the ASX operates around the Australian working day. When daylight saving is active, Singapore is three hours behind eastern Australia; during standard time, the gap is two hours. That makes SGX research possible during lunch, but live trading can extend well into the evening.
Australian investors are also accustomed to franking credits attached to eligible ASX dividends. Singaporean companies do not use the same franking system, and the tax treatment can depend on personal circumstances. I check the broker’s withholding information and seek specialist guidance when necessary rather than assuming the tax outcome from an ASX dividend.
I use a simple set of differences when deciding which market belongs in a portfolio:
| Consideration | Investing on SGX from Australia | Investing on ASX |
|---|---|---|
| Regular trading session | 9 a.m.–5 p.m. SGT, with a lunch break | 10 a.m.–4 p.m. Australian Eastern Time |
| Main benchmark | Straits Times Index, concentrated in large Singapore businesses | ASX 200, strongly represented by resources and financials |
| Trading currency | Primarily SGD, often converted to AUD for reporting | Primarily AUD |
| Common costs and paperwork | Currency spread, brokerage and Singapore dividend records | Brokerage and Australian franking documentation |
| Portfolio role | Targeted Singapore exposure | Broad Australian equity exposure |
My preference depends on the role rather than a forecast. I use Australian assets for familiar local exposure and may add SGX holdings when I have a specific reason, sufficient diversification and enough time to monitor currency risk. I would not switch markets merely because one index has moved further from a recent high.
A repeatable plan for future trades
The routine I now use is deliberately plain. It is designed to reduce the number of emotional decisions without pretending that losses can be eliminated.
- Set the allocation and cash reserve before researching a new security.
- Divide intended purchases across scheduled dates rather than reacting to headlines.
- Record the investment thesis, expected holding period and evidence that would change it.
- Include AUD/SGD conversion, fees and dividend withholding when calculating returns.
I keep a mistake log beside my usual balance records. It distinguishes a poor purchase from poor timing, careless sizing and currency movement, so one disappointing trade does not become an inaccurate verdict on the whole strategy. I also compare what I did with what my written plan required, which makes recurring behavioural errors easier to identify.
The lasting lesson is that timing the market often means timing my own emotions. A calmer process may leave some upside unclaimed, but it also preserves capital for decisions that still make sense months later. Follow The Financial MTC for more first-hand Singapore finance notes, and keep your investment policy and trade log ready before placing the next order.