Direct and indirect costs that can change a Support Resistance Reversal
Support Resistance Reversal refers to the idea that price may approach a previously observed support or resistance level and then move back in the opposite direction. In practice, the “reversal” you observe or measure is not only about price action; it is also influenced by costs that change effective prices, timing, and the size of the move needed to offset those costs.
Below are common cost types that can affect how strong or measurable a Support Resistance Reversal appears.
Mechanism: where costs interfere with reversal logic
A support or resistance level is a reference price area. A reversal concept implicitly assumes that the market moves far enough and fast enough to counter the move that would otherwise go through that level. Costs can interfere at different points:
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At execution (price you actually get):
- Spread (the difference between ask and bid) changes your effective entry and exit prices.
- Commissions reduce net returns.
- Slippage can occur when executed price differs from the expected price, especially around fast moves or thin liquidity.
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While positions are held (time-dependent charges):
- Financing or holding costs (often linked to overnight or carry) can accumulate if a position remains open.
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In the measurement process (what you label “reversal”):
- Even if the underlying pattern is present, costs can determine whether your net outcome matches the gross price movement you expected.
Assumption to keep calculations consistent: cost impacts depend on the order type, market liquidity, holding time, and the exact definition of “reversal” you use (for example, whether you require price to close beyond a level, or merely touch it).
Evidence and examples: how to reason without live data
Because no real-time prices are assumed here, the most reliable way to understand cost impact is to use a simple, written cost model with stated assumptions.
Example A: spread and commission as net drag
Assume an analysis framework where a reversal trade needs a certain gross price move (the “target move”) to be meaningful after costs. If you add spread and commissions to your calculation, the required gross move increases. This can cause two effects:
- Price may still reverse, but not enough to overcome costs.
- A reversal that looked adequate on a chart may become weak or not worthwhile when you apply net costs.
Example B: slippage around level touches
Assume price touches or approaches a support/resistance level during a volatility spike. If slippage is larger during these moments, the effective entry and exit can deteriorate right when the reversal concept is being tested. That can produce a failure mode where:
- The reversal starts to form visually,
- but execution quality reduces the realized outcome.
Example C: financing and holding time
Assume you hold longer on average in some conditions (for example, because your timeframe or risk management leads to slower confirmation). Financing/holding costs then become a larger part of total costs, which can turn marginal reversals into negative net outcomes.
Limitations and risks: material failure modes
Support Resistance Reversal is sensitive to variable market conditions. Key limitations include:
- Breakout risk (reversal failure): price may pass through the level and continue in the original direction. Costs can make it harder to recover if the move is delayed.
- Cost sensitivity: if spreads, slippage, or holding costs are large relative to the typical reversal distance, the concept can appear inconsistent.
- Non-stationary relationships: historical behavior of levels does not guarantee that the same level will behave similarly under different volatility regimes.
- Provider differences: fee structures, minimum order sizes, and execution policies vary by jurisdiction and provider, so one person’s “cost experience” may not match another’s.
Also note a measurement risk: if you define reversal using chart touches, but your execution uses fills that occur at worse prices, your observed performance can differ from the theoretical price movement.
Verification: how to independently check the relevant costs
To verify which costs affect your specific situation, do three checks using the provider’s official documentation (not forecasts):
- List cost components: identify spread representation, commissions, and any execution-related charges. 2. Identify time-dependent fees: confirm how financing/holding is calculated and when it is applied. 3.