Learn Center
SPY Flow
A dedicated feed of dark pool prints in SPY, the most heavily traded ETF in the market, isolated from every other ticker's flow.
What is SPY dark pool flow?
SPY dark pool flow is the off-exchange tape locked to the SPDR S&P 500 ETF. Each row is a reported SPY print: price, size, premium, dark volume versus total volume, and a bullish, bearish, or neutral label. The print hits the tape later. It is not a hidden buyer.
SPY is the most heavily traded U.S. ETF. Institutions use it for hedges, index rebalancing, and broad market exposure, so a large share of its volume prints away from the lit book. Those fills still report after the trade. You get time, price, size, and how much of SPY's tape is dark. You do not get who traded or why. A large print can be a block, a market-maker fill, or one slice of a larger parent order.
Premium and dark volume tell you whether enough capital moved to care. Dark Ratio shows how much of SPY's total volume printed off exchange. Direction is a row label, not proof that someone is accumulating the S&P 500. Because SPY's routine size is huge, a print that would look loud on a single stock can be average here. Repeated prints at the same price, especially with a high Dark Ratio and large premium, are a stronger prompt than one isolated row.
On EZPZ, the live chrome titles the page SPYFlow. There is no ticker search. Every row is SPY. Dark Pool Flow is the same columns across every ticker. $1M+ Premium Dark Pool Flow keeps only prints that already clear a million dollars of notional. $1M+ DP Volume Flow is a running total by ticker, not the raw tape. SPX and SPY Flow is listed options prints on SPX, SPXW, and SPY, not equity dark pool prints.
How SPY Flow works on EZPZ
Each row is one reported SPY snapshot: the size, the premium, and how much of SPY's volume printed in the dark. It is not a score. Most people start with PREMIUM, DARK VOLUME, and DARK RATIO. If a row looks interesting, read AVG SIZE, # DP TRADES, and DIRECTION next. When the tape is still too busy, raise the premium or size floor. You cannot switch the ticker. The universe is already locked to SPY.
How SPY Flow differs from Dark Pool Flow
Dark Pool Flow is the all-ticker off-exchange tape. You search a symbol when you want one name. SPY Flow is the same columns with the universe already locked to SPY, so that ETF does not bury or dominate the mixed list. $1M+ Premium Dark Pool Flow is the mixed tape with a fixed million-dollar notional floor. $1M+ DP Volume Flow adds prints up by ticker until the session total clears one million dollars. Use this page when you only care about the S&P 500 ETF. Use Dark Pool Flow when you want every matching name. Use the million-dollar pages when you only want size. Use SPX and SPY Flow when you want options fills on the index complex, not equity dark pool prints.
Anatomy of a print
Read a row left to right: when it printed, confirm TICKER is SPY, then how large the dark activity is. You do not need every column on every print. Use the tabs if you want a map of the fields.
These columns answer what printed, and when.
| Column | What you are looking at |
|---|---|
| TIME | When the print was reported. Dark pool prints can arrive after the fill. |
| TICKER | Always SPY on this page. There is no ticker search in the toolbar or the Filters drawer. |
| PRICE | The reported SPY trade price. |
| DIRECTION | Bullish, bearish, or neutral label on the row. It is a tag, not a thesis on the S&P 500. |
These columns help you decide if the print is large enough to spend time on.
| Column | What you are looking at |
|---|---|
| SIZE | Share size on this snapshot. |
| AVG SIZE | Average shares per dark pool trade in the row. Larger usually means fewer, chunkier prints. |
| PREMIUM | Dollar notional on the dark activity. This is the quickest way to rank the tape. |
| # DP TRADES | How many individual dark pool transactions are rolled into this row. |
These columns compare off-exchange size to SPY's total volume.
| Column | What you are looking at |
|---|---|
| TOTAL VOLUME | SPY shares traded across venues, lit plus dark. |
| DARK VOLUME | SPY shares reported off exchange. |
| DARK×PRICE | Dark volume times price. Another dollar read on the same size. |
| DARK RATIO | A bar and percent of dark volume over total volume. A fuller bar means more of SPY's tape printed off exchange. |
Filter the tape
Click Filters in the toolbar. That drawer is how you cut a busy SPY tape down to a direction hunt or a size screen. Reset puts the defaults back. All three direction toggles start on. There is no search ticker field. The page is already locked to SPY.
Toggles
- Direction: Bullish, bearish, and neutral row labels. Turn two off if you only want one color.
Ranges
- Price, Premium, Total Volume, Dark Pool Volume, Size, # of DP Trades: Min and max. Leave a field empty and there is no cap on that side (shown as infinity).
On the toolbar you can also change how many rows you see (50 is the starting setting), which columns are visible, and the text size. Those controls do not live in the Filters drawer.
Stay live
The right side of the toolbar controls whether the tape keeps moving:
- Live: newer matching SPY prints can show up during market hours.
- Paused: the tape freezes so a row does not scroll away while you read it.
- Prev / Next: page toward newer or older prints that still match your filters.
How people actually use it
Watch the index ETF
Leave Live on while you work the SPY chart. You are listening for this one name, not scanning the whole market.
Start with premium and ratio
Scan PREMIUM first. Then read DARK RATIO and DARK VOLUME so a cheap high-ratio snapshot does not crowd out a real dollar print.
Sit with one print
Read AVG SIZE, # DP TRADES, and DIRECTION. Then open SPX and SPY Flow if you want options around the same index, or Dark Pool Flow if you want other names.
Use it next to everything else
SPY Flow is a tape, not a setup. Keep it open beside the chart and index options tools. One print means look here, not buy this.