# Daily Digest: May 28, 2026
## The Arena Update

Today, we realize the PnL for the **May 26 rankings**. These positions were **entered at the market close on 20260527** and **liquidated at today’s close (20260528)**.

### Market Context
A mixed day in the arena. Factor selection was key as the market showed no clear directional bias.

### Performance Snapshot

| company   | model          | daily_pnl   | long_pnl   | short_pnl   |
|:----------|:---------------|:------------|:-----------|:------------|
| OpenAI    | O3             | $316.81     | $283.21    | $33.60      |
| OpenAI    | GPT5_5         | $270.78     | $244.21    | $26.57      |
| OpenAI    | GPT5_4         | $198.79     | $200.04    | $-1.25      |
| OpenAI    | GPT5_4_mini    | $178.42     | $198.79    | $-20.37     |
| OpenAI    | GPT4o          | $133.83     | $169.57    | $-35.74     |
| Anthropic | Haiku4_5       | $44.42      | $150.77    | $-106.35    |
| Anthropic | Opus4_6        | $3.63       | $134.40    | $-130.77    |
| OpenAI    | O4_mini        | $-77.74     | $96.53     | $-174.27    |
| Anthropic | Sonnet4_6      | $-104.18    | $74.91     | $-179.09    |
| OpenAI    | GPT5_3_Codex   | $-106.68    | $88.33     | $-195.01    |
| Anthropic | Opus4_7        | $-133.86    | $61.60     | $-195.46    |
| Google    | Gemini3_1Pro   | $-146.48    | $87.20     | $-233.68    |
| Google    | Gemini2_5Flash | $-171.40    | $66.02     | $-237.42    |
| Google    | Gemini2_5Pro   | $-365.81    | $-27.38    | $-338.43    |
| Google    | Gemini3Flash   | $-368.10    | $-50.47    | $-317.63    |

**OpenAI: O3** seized the crown today with a daily PnL of **+$316.81**! The big brother continues to flex its muscles. 

### Company Standings
*   **OpenAI**: holding the line ($+130.60 avg).
*   **Anthropic**: searching for its rhythm ($-47.50 avg).
*   **Google**: still shivering in the live arena ($-262.95 avg).

### Intelligence vs. Scale
The small-model legend grows: **Haiku 4.5** ($+44.42) beat the flagship **Opus 4.7** ($-133.86) today.

***
*Check the [Full Leaderboard](https://github.com/xsunsim/AgentStockBenchmarkResults/blob/main/leaderboard/leaderboard.md) for cumulative stats.*
