⚠️ この記事は日本語訳を準備中です。現在は英語版を表示しています。
TL;DR: The "Sector vs Stock" card puts two questions side by side — where is the money flowing (institutional net-buy ranking by sector and stock) and which listed stocks ran hardest over the window (relative strength, rebased to a shared start of 100). The left table shows money flow, the right chart shows price performance, and "correlation" tells you how tightly a stock moves with the market. This guide, in plain language, ties the three together. It describes money and price, not buy/sell advice.
Concepts
Why look at sector and stock together?
Look at a single stock and you miss the forest for the trees; look only at the index and you can't tell which group is leading. Putting sector-level money flow next to single-stock relative strength lets you first ask, "which sector is the money crowding into?", then drill down, "within that sector, which names are actually the strong ones?" Money flow and price performance confirm each other — one more layer of confidence than either alone.
The left table: institutional net-buy ranking
Each row is a stock; the columns are the net buying of the three major institution types:
- Foreign: overseas institutional money, the largest group in Taiwan's market, and often treated as the market's weathervane.
- Trust: domestic fund companies — relatively active, with window-dressing cycles.
- Dealer: brokerages trading their own capital; positions shift quickly.
- Total: the three summed — the overall net direction of institutions.
Net buy = buying outweighs selling that day; net sell is the reverse. Click any row's industry tag to keep only same-industry stocks and quickly see who is being bought most within that group.
Note: the amounts on the card are approximations (lots × closing price), not actual traded value. Fine for direction and relative size — don't treat them as exact figures.
What is correlation showing?
"Correlation" measures how tightly a stock has moved with the market (or its industry) lately, roughly on a −1 to +1 scale:
- Near +1: moves almost in lockstep — a follower of the market/sector.
- Near 0: unrelated, a more independent path.
- Negative: often moves the opposite way — useful for diversification.
High-correlation stocks mostly track the index; if you want names that can perform even when the index is flat, low correlation is worth a look.
The right chart: relative strength, rebased to 100
The "listed stocks trend" chart takes the top 30 listed stocks and rebases every price to a shared start of 100, then compares from there. Whether a stock trades at tens or hundreds, they all line up at the same starting gate:
- Higher line: rose more over the window (relatively stronger); lower line: relatively weaker.
- The ○ marks each stock's highest-volume day in the window — often tied to news or a turning point.
- The time range follows the days selector above; change the days and the whole chart moves with it.
Thirty lines at once is cluttered, so only 20 are labeled by default: click the stock names below to add or drop any line at any time, and use "Clear all" at the top-right to wipe the chart down to just the few you want to compare.
In practice on CTSstock
On the Sector vs Stock card on the Market page:
- Use the industry dropdown at the top-right, or click an industry tag in the table, to lock onto the group you care about.
- Read the Total column in the left table to find the names institutions bought most within that group.
- Switch to the right chart and check whether those names actually ran stronger after the 100 baseline — when money flow and price performance line up, the signal carries more weight.
- Turn on "Show labels" (CTShelp) at the bottom of the card to overlay "100 = starting baseline" and "higher = stronger, lower = weaker," so you can place each line at a glance.
- To compare a specific handful, hit "Clear all" at the top-right, then click the names to add them back one line at a time.
Common misreadings
- "The most-bought stock must rise the most": net buying is money flow; whether it rises depends on actual price action — which is exactly why the right chart sits alongside it.
- "The top line = the highest stock price": the right chart is relative strength rebased to 100 — it compares gains over the window, not absolute price.
- "High correlation = a good stock": correlation only describes how closely a stock tracks the market; high or low isn't good or bad — it depends on whether you want a follower or an independent mover.
Related reading
- Who Trades a Market? Reading Institutional vs Retail Roles
- Institutional Net Buying and Sector Rotation: Reading Money Flow
- See it live: open the "Sector vs Stock" card on the Market page, pick a sector, and compare net buying in the table with relative strength on the chart.