In this guide
What separates traders who generate steady returns from those treading water or facing losses is rarely about forecasting skill alone—it hinges on disciplined methodology and systematic execution. This guide outlines the core protocols that institutional and experienced independent traders follow throughout their trading lifecycle.
Before Entering Any Position
- Articulate your edge: What proprietary insight or analytical advantage do you possess that the broader market has overlooked? Commit this reasoning to a single, clear statement prior to committing capital.
- Check the spread: Does the gap between bid and ask prices remain sufficiently tight that your informational advantage justifies the cost of execution?
- Assess liquidity: Will you retain the ability to unwind this position at a favourable price if market conditions shift? Examine the depth and thickness of the order book.
- Set your probability independently: Derive your own forecast estimate in isolation, prior to observing quoted market odds, to guard against anchoring to consensus.
- Calculate position size: Apply the half-Kelly criterion as your sizing framework. Maintain a hard cap of 5% of total capital per individual trade, irrespective of confidence level.
During Position Management
- Update on new information: As material developments materialise (speeches, economic statistics, breaking news), recalibrate your forecast and determine whether to augment, maintain, or liquidate your stake.
- Don't check obsessively: Intraday price swings represent statistical variance, not signal. Monitor your holdings on a daily cadence for markets with extended timeframes, not minute-by-minute.
- Pre-define your exit criteria: At what market level will you close the position if your thesis proves incorrect? Establish this threshold before deployment to eliminate emotion-driven reversals.
After Each Market Resolves
- Record everything: Timestamp, contract identifier, your forecast estimate, entry price observed, final outcome, realised gain or loss
- Score your calibration: Did your predictions assigned 70% probability materialise at approximately 70% frequency?
- Categorize by market type: Do your returns diverge across sectors—for instance, do you demonstrate edge in geopolitical forecasts but lag in technology valuations?
- Review your losers honestly: Did this setback stem from flawed methodology or from sound reasoning that encountered unfavourable randomness?
Weekly Review Routine
- Reconcile all open positions and cumulative profit-and-loss statements
- Compute rolling 30-day and 90-day Brier score metrics
- Scan the forward calendar for scheduled announcements (central bank policy decisions, electoral cycles, significant economic indicators)
- Detect any recurring patterns or skews in your recent trading behaviour
- Adjust portfolio composition and sector weightings as warranted
FAQ
- How often should I review my prediction market performance?
- A weekly cadence proves most effective for the majority of market participants. Reviewing daily tends to amplify trading frequency and erode returns through friction; conversely, monthly intervals postpone necessary tactical adjustments.
- What software should I use to track prediction market trades?
- PolyGram's integrated portfolio management system provides a solid foundation for position tracking. For more granular performance attribution and statistical analysis, export your transaction history as CSV and process it through spreadsheet applications or custom scripts.
- How many markets should I research before entering each week?
- Depth of analysis outweighs breadth of coverage. Conducting rigorous due diligence on 3-5 carefully selected opportunities typically yields superior risk-adjusted returns compared to superficial scanning of dozens of contracts.