What Is Reserve Buffer?

What is Reserve Buffer?

Reserve Buffer (Reserves + ON RRP ÷ Bank Assets) is tracked in our framework because it captures a distinct dimension of US dollar liquidity. The DLI headline is built from the net-liquidity flow — the Fed balance sheet minus TGA minus ON RRP — plus an acute funding-stress override (SOFR-IORB, SRF). Policy and funding inputs drive that headline directly; credit and market-risk inputs are shown as context panels on the liquidity map alongside it.

The indicator uses a "lower_worse" direction, meaning falling values signal tightening liquidity conditions. This directional assignment is based on the historical relationship between the indicator's movement and subsequent risk asset performance.

Bank reserves plus ON RRP as a share of total commercial-bank assets — the banking system's cash cushion. Display-only context, NOT in the DLI score: the headline tracks the net-liquidity FLOW (is liquidity being added or drained now), while this shows the structural buffer LEVEL behind it. A falling ratio (TGA refills, ON RRP exhausted, reserves sliding) means a thinner margin of safety even when the flow reads loose. It halved from ~26% (2021-22) to ~12% (2026).

Why Reserve Buffer matters for risk assets

Changes in Reserve Buffer influence the broader liquidity environment through both direct and indirect channels. Directly, it affects the cost or availability of funding. Indirectly, it shifts market expectations about future policy or credit conditions.

For Bitcoin and equities, the impact is most visible when Reserve Buffer moves to extreme z-scores (above +1.5 or below -1.5). At these levels, the historical correlation with risk asset returns strengthens significantly. Moderate moves within the normal range tend to have weaker predictive power.

Cross-reference with ON RRP, TGA Balance, Fed BS Size, Net Liquidity for multi-indicator confirmation. The strongest signals come when multiple related indicators move in the same direction.

How to interpret daily updates

On the indicator detail page, follow this 3-step process:

Step 1: Check the percentile (5Y) to understand historical context. Above the 75th percentile is noteworthy; above the 90th is extreme. Step 2: Review the 7-day and 30-day trend direction — trend matters more than any single reading. Step 3: Check the homepage score card to see if this indicator is listed as a key driver and in what direction.

Pay attention to score transitions: when Reserve Buffer shifts from tightening to easing contribution (or vice versa), it often coincides with broader score shifts that create investable signals.

Common mistakes and better workflow

Mistake: Overweighting a single indicator. Reserve Buffer is only one component within its sub-index tier. If other indicators in the same tier disagree, the tier sub-score will dampen Reserve Buffer's contribution before it reaches the composite DLI.

Better workflow: Start with the score reading on the homepage. Then check the top drivers. Only then drill into Reserve Buffer if it's flagged as significant. This top-down approach prevents single-indicator tunnel vision. Combine with ON RRP, TGA Balance, Fed BS Size, Net Liquidity for the most complete assessment.