Introduction
Most Tadawul investors watch oil prices. They watch Saudi Aramco news. They check what SAMA is doing with interest rates.
Very few watch the VIX.
That is a mistake. And this article will show you why.
In simple terms: when fear spikes in the US stock market, your TASI portfolio will feel it. Maybe not immediately. But it will come. Through three clear pathways. Every single time.
Whether you follow general Saudi stocks advisory services or prefer making your own decisions, understanding the VIX can give you an edge most investors simply ignore.
This guide explains those pathways in plain language, shows you the exact VIX levels to watch, and tells you what to do at each level.
What is the VIX? Think of it as the world's fear meter
The VIX is a number. It is published every minute by a US exchange called the CBOE.
It measures how scared or confident investors in the US stock market are feeling right now.
Here is the easiest way to understand it:
Imagine you want to buy insurance for your car. If accidents are rising in your city, the insurance company charges you more. Why? Because the risk is higher.
The VIX works the same way. When the US market looks risky, the cost of protecting US stock portfolios goes up. That rising cost shows up as a higher VIX number.
The VIX goes up when investors are scared. It goes down when they are calm.
That is it. That is the whole idea.
In April 2025, the VIX hit 60 in a single day. That is one of the highest readings in history. Compare that to 80 during the 2008 global financial crisis and 83 during the COVID crash of 2020. April 2025 was not as bad as those. But it was still a serious shock to global markets.
The VIX at a glance:
How US fear reaches your TASI portfolio: 3 pathways
US stock market fear does not teleport into Tadawul. It travels through three specific pathways. Once you see them, you cannot unsee them.
The 3 channels:
Channel 1: The riyal is tied to the dollar
The Saudi riyal has been pegged to the US dollar for decades. This means Saudi Arabia cannot change its own interest rates freely.
When the US Federal Reserve raises or cuts rates, Saudi Arabia's central bank, SAMA, has to follow. Almost exactly.
In 2024, the US Fed cut rates three times. SAMA followed with three cuts of its own.
So when the VIX spikes and the US economy looks stressed, the Fed may change rates. And when the Fed changes rates, SAMA must respond. And when SAMA responds, Saudi banks, mortgage lenders, and big corporate borrowers all feel it. Most of these are major parts of the TASI index.
This is the most direct pathway. And it starts with a VIX spike.
Channel 2: Oil prices are the bridge
When the VIX spikes, it almost always means investors are worried about global economic growth.
Less global growth means less demand for oil.
Less demand for oil pushes oil prices down.
Lower oil prices hurt Aramco's valuation, compress government revenue, and weigh on Saudi petrochemical companies. These three together are some of the biggest weights in TASI.
Look at 2024. TASI's best month was February, up 7.1%. Oil was stable. The VIX was calm. TASI's worst month was May, down 7.2%. Global uncertainty was building. Oil was under pressure.
That is the oil pathway working in real life.
Channel 3: Foreign money moves fast
Saudi Arabia has been opening its stock market to foreign investors for several years now. More international money flows into Tadawul every year.
Foreign investors react to global fear signals much faster than local retail investors do.
When the VIX crosses 25 or 30, international fund managers reduce their exposure to all risky markets. Saudi Arabia is one of those markets.
Research has confirmed that as more foreign money enters TASI, the connection between Saudi stocks and global volatility gets stronger, not weaker. This trend is only going in one direction.
What to do at each VIX level: a trader's simple guide
Now that you understand the why, here is the how.
This is a practical guide for anyone trading TASI in the short term.
Your VIX action plan:
One practical tip:
The VIX moves in real time in the US. TASI opens hours later. This means a big VIX spike on a Tuesday night US time gives you several hours on Wednesday morning to check your positions before Tadawul opens.
If you follow disciplined Shariah compliant Saudi stocks trading advice, this timing advantage helps you avoid unnecessary risk.
5 things you gain by watching the VIX
- You see the fear before the market does. Early warning before TASI opens.
- Banks are most sensitive to VIX spikes. Energy and utilities are more stable. Rotate accordingly. Smarter sector choices.
- When the VIX spikes and then comes back down, markets tend to recover. Patient buyers who wait for this normalisation often buy at the best prices. Better entry timing.
- Technical levels on TASI charts work better in a low-VIX environment. In high-VIX periods, those levels break more often. Knowing this makes your analysis sharper. More reliable chart reading.
- A simple rule like reducing your trade size by 50% when the VIX exceeds 25 can protect you from big losses during volatile periods. Disciplined position sizing.
What the VIX cannot tell you
The VIX is a powerful tool. But it is not the whole story.
- Sometimes TASI and the VIX move together strongly. Other times the connection weakens. Never rely on the VIX alone. The correlation changes over time.
- OPEC decisions, Aramco announcements, Vision 2030 updates, and SAMA actions can move TASI in ways that have nothing to do with the VIX. In June 2024, a huge Aramco share sale drove the highest single-day trading value of the year at SAR 53.95 billion. The VIX had nothing to do with it. Local Saudi news can override everything.
- The SAR-USD peg creates predictability. But it also means Saudi monetary policy cannot independently protect the local market if the US has a serious financial crisis. The peg cuts both ways.
The bottom line: a simple habit that can change how you trade TASI
Before you open your Tadawul app tomorrow morning, do one thing.
Check the VIX.
If it is below 15, the global environment is calm. You can trade with more confidence.
If it is between 15 and 25, stay alert. Watch for sudden shifts.
If it is above 25, reduce your size. Be cautious.
If it is above 30, protect your capital first. Performance can wait.
This one habit will not make you a perfect trader. Nothing will. But it will stop you from being caught off guard by the same global fear that has moved TASI every single time it has shown up.
The VIX does not replace your analysis of oil prices, Aramco earnings, or Vision 2030 projects. Those are still the engine of TASI's long-term direction.
But the next time TASI drops 2% in a single session and you cannot figure out why, check what the VIX did the night before.
