Technology that moves finance forward. Home of @iexexchange, #IEXOptions, and more.
Joined October 2013
- Tweets 2,325
- Following 702
- Followers 18,213
- Likes 8,766
749 Photos and videos
Come to our block party! Block trading on IEX has seen substantial growth across trade sizes, as institutions increasingly use IEX for midpoint and block interaction. Check out our dark trading hub for more:
lnkd.in/eKeuuW2z
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Ronan and JR sit down with @RitholtzWealth's @awealthofcs to talk about the biggest investing myth of all: there’s a secret formula. iex.io/podcast/the-secret-is…
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Thanks to everyone who stopped by the IEX Liquidity Lounge at #OIC2026 last week and all the IEXers who worked to make it happen.
If you’re interested in learning more about what we’re building, visit our #IEXOptions information hub: iex.io/options/resources?utm…
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Phil McConkey’s career spans the Navy, the NFL, and Wall Street.
On our latest Boxes and Lines, he discusses how all of those worlds fit together in his work at @AcadSecurities. “You’re either getting better or getting worse.” Listen: iex.io/podcast/from-the-navy…
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What happens at 3:50pm?
About 10 percent of on-exchange volume and 20 percent of midpoint volume are trading on IEX in the final minutes of the day.
Read more in our latest Chart of the Month: iex.io/article/10-percent-of…
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Closing time: You don't have to go home... but you might want to trade here. Read our latest research: iex.io/article/closing-time-…
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In the final 10 minutes of the trading day, IEX handles 10% of exchange volume in $1 single stocks and ranks #3 among exchanges.
A more focused view of market share shows where institutions are actually trading into the close in our latest blog:
iex.io/article/closing-time-…
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On IEX, 90% of midpoint volume remained stable in Q3 2025, compared to 69% on other exchanges.
That stability is associated with better markouts, less slippage, and more competitive fill rates.
Read more about how IEX approaches dark trading: iex.io/products/equities/dar…
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291% growth in midpoint block trading volume. Check out IEX's Dark Trading hub for more: iexexchange.io/dark-trading?…
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Dark trading on IEX, by the numbers:
• 90% midpoint stability (vs 69% on other exchanges)
• 48% of on-exchange midpoint blocks
• 291% YoY growth in 1k–5k blocks (~198M ADV)
• 1.3 bps avg slippage
Check out our new non-displayed hub here:
iexexchange.io/dark-trading?…
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Better markouts, less slippage, and more competitive fill rates.
Check out our new dark trading hub for more: iexexchange.io/dark-trading?…
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IEX President Bryan Harkins on what 2026 may bring for institutional trading, including how dark venues are being evaluated: tradersmagazine.com/xtra/out…
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IEX retweeted
Jan 14
IEX has grown into a top-three displayed venue in key metrics, with increased displayed market share and NBBO quote presence on both sides. Our latest blog breaks down performance trends and pre-trade price improvement with D-Limit. iex.io/article/iex-now-a-top…
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IEX retweeted
17 Dec 2025
Ronan & JR recap the biggest market themes of 2025 on a new Boxes and Lines, incuding extended hours, retail, and subdollar, and end the ep with a “tribute” to their friendship (aka: a montage of them arguing). Listen here:
iex.io/podcast/boxes-and-lin…
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IEX retweeted
11 Dec 2025
Taking a closer look at IEX's significant displayed trading growth. Our latest research: iex.io/article/iex-now-a-top…
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IEX retweeted
24 Nov 2025
IEX’s displayed market share is rising and hitting new highs, while we continue to provide superior performance. See the latest research: iex.io/article/iex-now-a-top…
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We are pleased to share that IEX Options received regulatory approval yesterday. We are grateful to the broad range of industry participants who voiced their support. Looking forward to taking the next steps towards launch!
iex.io/options?utm_source=tw…
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IEX retweeted
28 Aug 2025
In our latest Boxes and Lines episode, we handed the mic to our summer interns. What followed: Gen Z takes on the future of work, a few Excel flexes, and why you should play Pitbull at your professor’s wedding.
iex.io/podcast/our-2025-summ…
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