Wells Wilder's parabolic stop and reversal (SAR) is a trailing stop-based trading system; it is also often used as an indicator. SAR uses trailing stop levels to follow prices up or down. The stop level increases the speed according to the acceleration factor. When drawn on a chart, this stop level is similar to a parabola, so the name of the indicator. The parabolic function takes three parameters. The first two control the acceleration when moving up and down, respectively. The last parameter determines the maximum acceleration.Parabolic SAR assumes that you are trading a trend, so prices are expected to change over time. If you are long, the parabolic SAR will move up and stop for each period, regardless of whether the price has moved or not. Parabola SAR moves down if you are short.How does this indicator work?1. The parabolic SAR trading system uses the parabolic level as the "stop and reversal" point to calculate the stop loss for each upcoming period. When the stop is hit, you close the current trade and initiate a new one in the opposite direction. This system allows you to invest in the market at any time.two。 Indicators are usually displayed as a series of dots above or below the price bar. The point is the stop level. When you stop above the railing, you should be short; when you stop under the railing, you should be for a long time.3. Parabolic SAR may cause whiplash saws in sideways or endless markets.4. Parabolic synthetic aperture radar in the trend of fast movement.

Singapore real estate investment trusts can benefit from their safe-haven status during a time of market volatility as the U.S. Fed raises interest rates, analysts from DBS say in a research note.
The Fed's clarity on its rate-rise trajectory will likely lead to more price stability for Singapore REITs, they say.
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Are you optimistic about the stock market but worried that buying stocks could be too risky? Or are you bullish on a particular sector but don't know which stock to buy?
If you have these concerns, an ETF may be a possible choice.
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A good example is the EV investment boom, as energy-efficient and low-carbon economie...