Dark Pool Activity
Weekly FINRA ATS (Alternative Trading System) data for 1,027 stocks — updated every Friday.
Week of: 2026-09-28
About Dark Pool Data
Dark pools are private exchanges where institutional investors trade large blocks of shares away from public markets. FINRA requires all Alternative Trading Systems (ATS) to report weekly volume data.
- Notional Value: Total dollar value of shares traded in dark pools (shares × price)
- Volume Surge: Week-over-week change in dark pool share volume — spikes may indicate institutional accumulation or distribution
- Avg Trade Size: Shares per trade — larger average sizes suggest institutional block trading rather than retail flow
Data source: FINRA ATS Transparency Data (Tier 1 — NMS stocks), published weekly with a 2-week delay.
Stocks Tracked
1,027
with dark pool data
Total Shares
5.3B
this week
Total Notional
$590.5B
dollar volume
Total Trades
82,165,277
this week
Top 10 by Weekly Notional $
Biggest dollar flow through dark pools this week
| # | Symbol | Company | Price | Mkt Cap | Notional $ | Shares | Trades |
|---|---|---|---|---|---|---|---|
| 1 | MU | Micron Technology, Inc. | $903.70 | $1.0T | $19.4B | 18,154,919 | 650,847 |
| 2 | NVDA | NVIDIA Corporation | $216.00 | $5.2T | $17.0B | 73,587,144 | 852,189 |
| 3 | META | Meta Platforms, Inc. | $630.56 | $1.6T | $13.7B | 18,884,104 | 433,441 |
| 4 | SPCX | Space Exploration Technologies Corp. | $146.90 | $2.0T | $10.1B | 66,729,686 | 644,953 |
| 5 | AMD | Advanced Micro Devices, Inc. | $531.28 | $867.3B | $9.5B | 15,507,912 | 356,790 |
| 6 | TSLA | Tesla, Inc. | $391.62 | $1.5T | $9.5B | 26,506,715 | 569,845 |
| 7 | MSFT | Microsoft Corporation | $532.60 | $4.0T | $9.3B | 18,029,661 | 423,223 |
| 8 | AAPL | Apple Inc. | $343.91 | $5.0T | $9.3B | 27,684,623 | 522,286 |
| 9 | GOOGL | Alphabet Inc. | $316.80 | $3.9T | $8.4B | 24,490,351 | 531,350 |
| 10 | SNDK | Sandisk Corporation | $1255.58 | $181.5B | $8.2B | 4,736,238 | 283,398 |
Top 10 by Week-over-Week Volume Surge
Biggest increase in dark pool share volume vs prior week — potential institutional accumulation
| # | Symbol | Company | Price | Mkt Cap | WoW Change | Shares | Prior Wk | Notional $ |
|---|---|---|---|---|---|---|---|---|
| 1 | CTVA | Corteva, Inc. | $11.95 | $8.0B | +551% | 41,825,222 | 6,421,621 | $732M |
| 2 | FICO | Fair Isaac Corporation | $708.07 | $15.3B | +304% | 2,802,416 | 693,094 | $1.8B |
| 3 | MAT | Mattel, Inc. | $15.82 | $4.5B | +288% | 16,241,999 | 4,181,020 | $236M |
| 4 | UTHR | United Therapeutics Corporation | $592.84 | $25.4B | +256% | 2,461,140 | 691,601 | $1.3B |
| 5 | MDB | MongoDB, Inc. | $389.11 | $31.3B | +245% | 8,793,683 | 2,551,182 | $3.0B |
| 6 | CAG | Conagra Brands, Inc. | $14.58 | $7.0B | +175% | 26,068,053 | 9,484,203 | $355M |
| 7 | NU | Nu Holdings Ltd. | $12.59 | $60.8B | +171% | 109,566,225 | 40,451,849 | $1.4B |
| 8 | WLK | Westlake Corporation | $65.31 | $8.3B | +146% | 2,203,587 | 895,924 | $139M |
| 9 | AIG | American International Group, Inc. | $81.13 | $43.0B | +122% | 9,067,183 | 4,083,372 | $676M |
| 10 | JBL | Jabil Inc. | $275.68 | $28.9B | +121% | 3,002,987 | 1,356,614 | $912M |
Top 10 by Average Trade Size
Largest average shares per trade — indicates institutional block activity
| # | Symbol | Company | Price | Mkt Cap | Avg Trade Size | Shares | Trades | Notional $ |
|---|---|---|---|---|---|---|---|---|
| 1 | WBD | Warner Bros. Discovery, Inc. | $30.95 | $77.6B | 554 | 63,037,411 | 113,689 | $1.9B |
| 2 | PSLV | Sprott Physical Silver Trust | $17.27 | $10.9B | 474 | 4,606,384 | 9,722 | $90M |
| 3 | PHYS | Sprott Physical Gold Trust | $30.33 | $14.4B | 389 | 2,310,589 | 5,942 | $72M |
| 4 | NU | Nu Holdings Ltd. | $12.59 | $60.8B | 364 | 109,566,225 | 300,637 | $1.4B |
| 5 | AGNC | AGNC Investment Corp. | $8.78 | $10.4B | 345 | 40,959,615 | 118,585 | $377M |
| 6 | HBAN | Huntington Bancshares Incorporated | $15.73 | $31.8B | 287 | 30,251,582 | 105,431 | $462M |
| 7 | AUR | Aurora Innovation, Inc. | $4.87 | $9.8B | 286 | 31,264,718 | 109,508 | $171M |
| 8 | AAL | American Airlines Group Inc. | $12.20 | $8.1B | 253 | 32,172,529 | 127,000 | $427M |
| 9 | PCG | PG&E Corporation | $12.85 | $34.4B | 247 | 42,874,131 | 173,774 | $521M |
| 10 | UWMC | UWM Holdings Corporation | $1.41 | $2.1B | 242 | 13,223,136 | 54,715 | $16M |