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Dark Pool Activity

Weekly FINRA ATS (Alternative Trading System) data for 1,008 stocks — updated every Friday.

Week of: 2026-02-23
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
1,008
with dark pool data
Total Shares
5.7B
this week
Total Notional
$591.3B
dollar volume
Total Trades
85,680,361
this week
Top 10 by Weekly Notional $
Biggest dollar flow through dark pools this week
# Symbol Company Price Mkt Cap Notional $ Shares Trades
1 NVDA NVIDIA Corporation $172.70 $4.2T $20.2B 107,141,443 1,363,004
2 MSFT Microsoft Corporation $381.87 $2.8T $12.0B 30,502,462 697,564
3 TSLA Tesla, Inc. $367.96 $1.4T $9.8B 24,257,786 669,691
4 SNDK Sandisk Corporation $709.71 $104.8B $8.8B 13,675,756 331,651
5 MU Micron Technology, Inc. $422.90 $476.0B $8.8B 20,898,406 461,907
6 AAPL Apple Inc. $247.99 $3.6T $7.9B 29,380,172 472,690
7 AMZN Amazon.com, Inc. $205.37 $2.2T $7.4B 35,587,191 528,466
8 GOOGL Alphabet Inc. $301.00 $3.6T $7.1B 22,883,617 489,758
9 AVGO Broadcom Inc. $310.51 $1.5T $7.1B 21,855,518 467,045
10 AMD Advanced Micro Devices, Inc. $201.33 $328.3B $6.3B 30,588,112 460,091
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 BHF Brighthouse Financial, Inc. $59.35 $3.4B +453% 2,415,651 436,812 $148M
2 THO Thor Industries, Inc. $75.20 $4.0B +406% 1,801,408 356,368 $181M
3 FOUR Shift4 Payments, Inc. $41.19 $3.7B +325% 6,908,568 1,626,427 $355M
4 NU Nu Holdings Ltd. $13.94 $67.4B +323% 92,035,918 21,740,912 $1.4B
5 AWI Armstrong World Industries, Inc. $163.86 $7.1B +308% 1,541,781 377,530 $274M
6 ZM Zoom Communications, Inc. $76.61 $22.7B +298% 11,923,366 2,999,770 $951M
7 AXON Axon Enterprise, Inc. $496.27 $39.9B +297% 2,737,462 689,095 $1.4B
8 PSKY Paramount Skydance Corporation Class B Common Stock $9.15 $9.9B +294% 27,052,652 6,867,179 $327M
9 ECG Everus Construction Group, Inc. $110.95 $5.7B +285% 2,342,697 608,962 $289M
10 KEYS Keysight Technologies, Inc. $277.53 $47.6B +270% 5,758,316 1,554,934 $1.7B
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 CLVT Clarivate Plc $2.49 $1.6B 297 22,025,746 74,080 $49M
2 UWMC UWM Holdings Corporation $3.56 $5.4B 283 35,725,482 126,296 $152M
3 OWL Blue Owl Capital Inc. $9.12 $14.3B 274 69,787,804 254,588 $752M
4 NU Nu Holdings Ltd. $13.94 $67.4B 255 92,035,918 360,704 $1.4B
5 WBD Warner Bros. Discovery, Inc. $27.42 $68.0B 234 32,809,098 139,940 $938M
6 F Ford Motor Company $11.52 $45.1B 227 60,091,120 264,303 $854M
7 AGNC AGNC Investment Corp. $9.75 $10.8B 216 19,405,437 89,870 $219M
8 AAL American Airlines Group Inc. $10.43 $6.9B 212 36,152,053 170,702 $482M
9 MPT Medical Properties Trust, Inc. $4.56 $13.5B 199 7,174,166 36,129 $41M
10 CFLT Confluent, Inc. $30.99 $11.1B 199 10,283,810 51,579 $315M

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For informational purposes only. Not investment advice. Data sourced from SEC filings. Privacy Terms