Nasdaq, Inc. announced that its Nasdaq Closing Cross achieved a record trading volume during the June 2026 Russell US Indexes reconstitution. A total of 4,594,880,616 shares, representing $334.027 billion, were executed in 1.630 seconds across Nasdaq-listed securities. This event marked the largest liquidity event on the Nasdaq Stock Exchange for the Russell Reconstitution, surpassing the 2025 volume of 2,506,428,416 shares valued at $102.455 billion, which were executed in 0.871 seconds.

Reconstitution Details

The Russell Reconstitution occurs semi-annually to reflect shifts in market capitalization, sector dominance, and style orientation of publicly traded US companies. This year marked the 23rd year that the Nasdaq Closing Cross was used to calculate the reconstitution for the entire family of Russell US Indexes, including the Russell 1000, Russell 2000, and Russell 3000.

Market Impact and Technology

Kevin Kennedy, EVP, North American Markets at Nasdaq, highlighted the scale of the event, noting that US equity markets have grown materially in complexity. He stated that the record demonstrates the infrastructure's ability to scale with the market, delivering a single, transparent closing price across record volume in under a second.

Fiona Bassett, CEO of FTSE Russell, emphasized that the record notional volume underscores the trust the investment community places in the transparent and rules-based process. She noted that the successful completion of the rebalancing marks another milestone in the shared commitment to market integrity and efficiency.

Index Implementation

The index reconstitution process was completed on June 26, 2026. The newly reconstituted index membership will take effect when markets open on June 29, 2026. Approximately $10.6 trillion in assets are benchmarked to or invested in products based on the Russell US Indexes, which are subsets of the Russell 3000E Index representing approximately 98% of the US equity market.

Since the Nasdaq Closing Cross began calculating the Russell Reconstitution over two decades ago, the Cross has reduced latency by over 85%. This improvement has effectively kept pace with an increasing trade volume growth of over 550% and an increasing notional volume growth of over 1500%.

The Nasdaq dropped 276.06 points, or 1.09 percent, to 25,082.54 after market open in the latest session, reversing the prior session's post-open gain of 234.68 points, or 0.92 percent, to 25,711.32. The prior session had unofficially closed down 163.89 points, or 0.64 percent, at 25,312.74, itself a reversal of that session's earlier post-open gain. The latest post-open decline extends the index's retreat from its recent high of 27,096.84 recorded earlier in the tracked sequence.

Session Performance Overview

The table below captures the Nasdaq's key performance metrics across recent sessions, from the prior close through the latest post-open reading:

Multi-Session Trajectory

The index had registered a substantial single-session advance of 438.63 points at the prior close to 26,244.82, followed by only a marginal gain of 14.47 points at its unofficial close of 26,261.55. Renewed selling pressure then emerged early in the subsequent session, with the index declining sharply after the open by 196.32 points, or 0.75 percent, to 26,077.81, before provisionally settling at 26,079.14. The following session opened with a post-open gain of 51.30 points, or 0.20 percent, to 26,139.50, ultimately provisionally closing higher by 316.17 points, or 1.21 percent, at 26,404.37.

Recovery Attempt and Subsequent Reversal

Building on that recovery, the index opened higher by 40.44 points, or 0.15 percent, at 26,442.79, before provisionally closing with a gain of 230.11 points, or 0.87 percent, at 26,632.45. However, the subsequent session opened on a sharply negative note, with the index falling 376.95 points, or 1.42 percent, to 26,258.27 after market open, and ultimately unofficially closing down 402.48 points, or 1.51 percent, at 26,232.75, erasing a significant portion of the recent multi-session recovery.

Prior Sessions and Continued Selling Pressure

The prior session opened with a brief post-open uptick of 32.05 points, or 0.12 percent, to 26,257.20, suggesting an early attempt to recoup ground lost in the preceding session. However, the index was unable to sustain the recovery, ultimately unofficially closing down 148.93 points, or 0.57 percent, at 26,076.21. In the subsequent session, the index reversed the recent downtrend at the open, rising 123.58 points, or 0.48 percent, to 25,994.29 after market open, and ultimately unofficially closing up 394.17 points, or 1.52 percent, at 26,264.88.

Extended Recovery and Approach Toward Recent Highs

In the sessions that followed, the Nasdaq staged a multi-session recovery. The index opened lower by 146.48 points, or 0.56 percent, to 26,123.88 after market open, but recovered to unofficially close up 30.80 points, or 0.12 percent, at 26,301.16. The subsequent session saw the index open higher by 105.32 points, or 0.40 percent, to 26,398.42, before moderating to unofficially close up 60.74 points, or 0.23 percent, at 26,353.83. The next session extended the advance, opening higher by 243.14 points, or 0.92 percent, to 26,587.11 after market open, and ultimately unofficially closing up 304.98 points, or 1.16 percent, at 26,648.95. In the session that followed, the index opened higher by 36.87 points, or 0.14 percent, at 26,693.06 after market open, before officially closing marginally higher by 0.06 percent at 26,671.47. The Nasdaq subsequently opened higher by 8.84 points, or 0.03 percent, to 26,683.57 after market open, before closing strongly higher by 243.19 points, or 0.91 percent, at 26,917.93.

Approach to Recent Highs and Subsequent Decline

The following session saw the index open higher by 34.17 points, or 0.13 percent, to 26,951.64 after market open, before unofficially closing up 63.72 points, or 0.24 percent, at 26,981.19. The subsequent session saw the index open lower by 46.64 points, or 0.17 percent, to 26,925.98 after market open, before reversing to unofficially close up 112.18 points, or 0.42 percent, at 27,084.80. The following session then saw the Nasdaq extend its gains to unofficially close up 10.03 points, or 0.04 percent, at 27,096.84, marking a new high across the tracked session sequence. In the session that followed, the index opened marginally lower by 2.64 points, or 0.01 percent, to 27,091.26 after market open, before extending losses to unofficially close down 236.19 points, or 0.87 percent, at 26,857.71. In the subsequent session, the index extended its decline further after the open, falling 289.39 points, or 1.08 percent, to 26,564.59, before staging a notable intra-session recovery to unofficially close down just 7.09 points, or 0.03 percent, at 26,846.89, significantly paring the session's earlier losses. In the following session, the index resumed its decline, falling 321.79 points, or 1.20 percent, to 26,509.17 after market open, before unofficially closing down 1,072.37 points, or 4.00 percent, at 25,758.58, marking the steepest single-session decline in the tracked sequence.

Latest Sessions and Current Reading

In the session following the steepest decline, the Nasdaq opened sharply higher by 378.69 points, or 1.47 percent, to 26,088.13 after market open, before unofficially closing up 219.49 points, or 0.85 percent, at 25,928.93, partially reversing the prior session's steep losses. In the following session, the index extended its recovery, rising 192.17 points, or 0.74 percent, to 26,121.83 after market open, before reversing course to unofficially close down 272.81 points, or 1.05 percent, at 25,656.85. The subsequent session saw the index open lower by 166.71 points, or 0.65 percent, to 25,512.12 after market open, before extending losses further to unofficially close down 472.01 points, or 1.84 percent, at 25,206.81. In the following session, the index opened marginally lower by 8.44 points, or 0.03 percent, at 25,801.22 after market open, before unofficially closing higher by 76.49 points, or 0.30 percent, at 25,886.15. In the subsequent session, the Nasdaq extended its recovery sharply, rising 563.71 points, or 2.18 percent, to 26,452.56 after market open, before unofficially closing up 763.84 points, or 2.95 percent, at 26,652.68. In the following session, the index pulled back marginally, declining 34.16 points, or 0.13 percent, to 26,649.78 after market open, before unofficially closing down 293.61 points, or 1.10 percent, at 26,390.33. In the subsequent session, the Nasdaq opened higher by 115.00 points, or 0.44 percent, to 26,491.35 after market open, before reversing course to unofficially close down 352.68 points, or 1.34 percent, at 26,023.66. In the following session, the index opened higher by 407.09 points, or 1.56 percent, at 26,428.75 after market open, before extending gains to unofficially close up 524.98 points, or 2.02 percent, at 26,546.63. In the subsequent session, the Nasdaq opened lower by 34.64 points, or 0.13 percent, at 26,483.29 after market open, before unofficially closing down 356.62 points, or 1.35 percent, at 26,161.31. In the following session, the index opened lower by 623.90 points, or 2.38 percent, to 25,542.70 after market open, before closing down 546 points, or 2.1 percent, at 25,620, deepening the retreat from the recent high of 27,096.84. In the subsequent session, the Nasdaq opened higher by 10.86 points, or 0.04 percent, to 25,597.90 after market open, before reversing to unofficially close down 150.88 points, or 0.59 percent, at 25,436.16. In the following session, the index opened higher by 234.68 points, or 0.92 percent, at 25,711.32 after market open, before reversing to unofficially close down 163.89 points, or 0.64 percent, at 25,312.74. In the latest session, the Nasdaq has declined 276.06 points, or 1.09 percent, to 25,082.54 after market open, extending the retreat from the recent high of 27,096.84.