EROC vs OII (ERock Inc. vs Oceaneering International Inc.)
Showing Closing Date Range from Sep, 14 to Sep, 15, 2026.
Normalized cumulative comparison anchored at 0.00% baseline to illustrate pure alpha, return divergence, and market momentum.
Pre-Market Session In Progress
Current time is 5:56 AM ET. The regular US trading session begins at 9:30 AM ET. Showing closing prices from the prior official trading session.
OII leads by +4.36% Alpha Spread Today
EROC is trading at -1.95% while OII is at +2.41% .
Started At
Official opening auction price
Previous Close
Baseline for today's market open
Gained / Lost Today
Net return against previous session close
Today's Trading Range Position
Where each asset is currently trading relative to its Day Low and Day High
Session Liquidity & Volume
Trading activity, share volume, and estimated dollar liquidity
Session Ledger Comparison
Direct side-by-side breakdown of today's key auction and price metrics
| Metric | EROC | OII | Head-to-Head Advantage |
|---|---|---|---|
| Today's Return | -1.95% | +2.41% | OII +4.36% |
| Net Dollar Move | $-0.22 | +$1.12 | OII higher move |
| Open Price | $11.32 | $46.86 | Gap: 0.53% vs 0.64% |
| Day High | $11.69 | $48.29 | Session peaks |
| Day Low | $11.02 | $46.52 | Session troughs |
| Intraday Spread | $0.67 | $1.77 | High/Low spread |
| Share Volume | 1.99M | 1.02M | EROC more active |
| Est. Dollar Volume | $21.93M | $48.85M | OII higher liquidity |
Explore EROC vs OII Over Extended Timeframes
Today's session isolates intraday momentum. Switch to normalized multi-day timeframes to analyze historical correlations, cumulative returns, and divergence charts.