Wide and valuable turned out to be different spreads this week — and neither cleared costs. That gap is the honest headline. Everything below is a live on-chain measurement taken by our own collector over 2026-08-10 to 2026-08-16 (UTC) — no estimates, no backfill, and no numbers carried over from anywhere else.
The desk card, as this issue was built
The card above is the desk's share image as it stood when this issue was generated — one point in time, not a summary of the week below.
The top spreads we measured this week, ranked by gross value
pair | chain | gross bps | gross $ at optimal size | optimal size | capturable |
|---|---|---|---|---|---|
ETH/USDT | bsc | 25.06 | $0.0630 | $25.13 | no |
ETH/USDT | bsc | 21.59 | $0.0486 | $22.48 | no |
BTCB/USDT | bsc | 29.58 | $0.0469 | $15.86 | no |
WBNB/USDT | bsc | 81.30 | $0.0403 | $90.89 | no |
ETH/USDT | bsc | 11.87 | $0.0324 | $27.33 | no |
WBNB/USDT | bsc | 100.07 | $0.0189 | $62.20 | no |
The last row is the week's widest spread at 100.1bps. It is here because the headline names it, not because it ranked on value — it did not. That is the gap this issue is about.
6 of these 6 were not capturable. A wide spread against a thin pool is arithmetic, not an opportunity: the optimal trade size collapses to a few dollars and fees eat the whole gross. We publish the gross number and the capturable flag beside it rather than one without the other.
Gas: what it costs to act
Across 14 distinct measurements this week the cheapest-to-dearest gas spread ran between 54.5x and 124.9x, finishing at 112.6x. On the last reading (2026-08-11T05:05:42.533Z) one 150,000-gas swap cost $0.00005 on avalanche and $0.005629 on arbitrum.
Scope
Gross cross-venue spreads from live pool state, before gas, MEV and any slippage beyond the optimal size. Not a profit estimate and not trade advice. Venues below the liquidity floor are excluded, because a spread against a dust pool is an artefact rather than an opportunity. This issue covers 2026-W33 only (2026-08-10 to 2026-08-16 (UTC)) and rests on 14 distinct measurement(s) and 1 logged gap row(s); a short history is a short history, and we publish what we have.
Live dashboard, updated continuously: arb-dex-data dashboard
Raw snapshot: digest.json
Week 2026-W33. Last measurement 2026-08-11T05:05:42.533Z. Every number above traces to a row in the desk's own collector log.