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Dow Jones across any date range
Dow Jones movement across any date range
Pick a start date and end date, then animate the Dow Jones Industrial Average across that period. The chart snaps to the nearest trading day, shows the peak-to-trough move inside the window, and can replay famous market eras for reels or educational posts.
Full data range in this file
12s
Tip: log scale is useful when comparing long periods such as 1929 to today because equal percentage moves take equal visual space. Linear scale is better when you want viewers to feel the raw point changes.
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How a market maker quotes and manages risk
Market Maker Simulator
A simplified visual of how a dealer/market maker can post a bid and ask, fill incoming market orders, manage inventory, and adjust the spread when volatility or inventory risk rises.
18 ticks/sec
12 / 50
6¢
Higher means less quote skew from inventory
Bid
—
Ask
—
Spread
—
Last trade
—
Price path, quotes, and fair value
Market maker ledger
| Inventory | 0 shares |
| Cash | $0.00 |
| Spread captured | $0.00 |
| Mark-to-market P&L | $0.00 |
| Trade count | 0 |
| Risk mode | Normal |
The dealer earns the spread only if they can buy near the bid and sell near the ask over time. If they accumulate too much long or short inventory while price moves against them, mark-to-market losses can overwhelm spread income.
Order book snapshot
| Level | Bid size | Bid | Ask | Ask size |
|---|