Bitcoin and the S&P 500 both respond to Fed liquidity, but with different timing, magnitude, and recovery profiles. Here's the four-phase liquidity cycle, the historical data on each asset across 2018-2026, and which one is the better play in each phase.
Fed liquidity cycles aren't binary loose/tight. They have four phases. Phase 1: peak ease — zero rates, full QE, asset prices melting up. Phase 2: tightening transition — rate hikes start, QT begins, asset prices roll over. Phase 3: peak tightness — rates near terminal, QT cumulative drag heaviest, asset bottoms form. Phase 4: easing pivot — Fed signals dovish, plumbing eases, recovery begins.
Each phase has lasted between 6 months and 3 years in recent history. The 2020-2026 sequence: Phase 1 (2020-Q4 to 2022-Q1) → Phase 2 (2022-Q2 to 2022-Q4) → Phase 3 (2023-Q1 to 2024-Q2) → Phase 4 (2024-Q3 onward). Both BTC and SPX respond, but in characteristically different ways.
When the Fed is at zero rates and actively expanding the balance sheet, the marginal dollar flows down the risk hierarchy and BTC sits at the far end. From the COVID low to the late-2021 peak, BTC ran from $5K to $69K (+1,300%). SPX ran from $2,200 to $4,800 (+118%). The BTC outperformance ratio: roughly 11x.
The mechanism: in peak-ease phases, the marginal buyer is desperate for yield/return. SPX gets the institutional flow, BTC gets the retail/long-tail flow plus institutional adoption. The longer Phase 1 lasts and the looser liquidity gets, the more BTC outperforms. The trade in Phase 1 is to overweight BTC vs SPX.
As soon as the Fed signals tightening, BTC tops first (sometimes leading SPX by 2-4 weeks). The reason: BTC's marginal buyer is more sentiment-driven and pulls back faster on policy uncertainty. The 2021-Q4 BTC top preceded the 2022-Q1 SPX top by about 6 weeks.
During the falling phase, BTC drops faster and deeper than SPX. 2022: BTC -77% from peak, SPX -27% from peak. The drawdown ratio is consistently 2.5-3x. But BTC also bottoms earlier — the 2022 BTC low (~$15.5K, November) preceded the 2022 SPX low (~$3,500, October) by mere weeks, and BTC's recovery from that low was much faster. The trade in Phase 2 is to underweight both, but exit BTC first if you're going to choose.
When tightness is at maximum (peak rates, sustained QT), BTC and SPX behavior diverges. SPX continues to grind sideways or down, weighed by margin compression and recession fear. BTC starts to sniff out the eventual pivot — historically, BTC adds 50-100% from absolute lows during Phase 3 even while SPX is still range-bound or declining.
The 2023 example: BTC ran from $16K to $44K (+175%) during 2023 while SPX ran from $3,800 to $4,600 (+21%). The BTC outperformance ratio in Phase 3: roughly 8x. The mechanism: BTC's leverage cycle has reset (over-leveraged longs were liquidated in Phase 2), and any easing of plumbing-level signals (SOFR-IORB normalizing, HY spreads narrowing) triggers fast BTC bid. The trade in Phase 3 is to start accumulating BTC aggressively.
Once the Fed pivots dovish, SPX rallies first because institutions can immediately reweight from cash to equities. BTC follows with a delay of weeks-to-months but eventually outperforms. From the late-2024 pivot through early 2026, SPX +35%, BTC +180%. SPX leads on a daily basis but BTC catches up and surpasses on a quarterly basis.
The mechanism: Phase 4 is essentially Phase 1 forming again. Once that becomes the consensus narrative, the same risk-hierarchy dynamics return. The trade in Phase 4 is to be long both, with progressive overweight on BTC as Phase 4 matures.
A simple framework: Phase 1 = max BTC, Phase 2 = max cash/short-duration bonds, Phase 3 = accumulate BTC, Phase 4 = balanced long both with BTC tilt. Where you are in the cycle is determined by the DLI score plus the SOFR-IORB and HY OAS signals on DollarLiquidity.com.
Critically: this is the SHAPE of the historical pattern, not a guarantee. The 2018, 2020, and 2022-2024 cycles all followed it. A specific cycle can be longer, shorter, or shaped differently. The framework is for orientation, not exact timing — combine with your own judgment about valuations, sector trends, and ETF flows.
It has in the episodes we have data for, and by a wide margin — but the same beta works in reverse, and the sample covers only a handful of cycles. The useful statement is that Bitcoin is a leveraged expression of the same liquidity factor that drives equities, not that it is a better asset. Leverage is symmetric even when the narrative around it is not.
No cash flows, no buyback bid, and a holder base that uses more leverage. Equity indices have earnings, dividends and corporate repurchases that put a floor under valuations at some price; Bitcoin's floor is wherever the marginal holder stops selling. Take away the funding that supports leveraged positions and there is less standing underneath it.
The correlation rises when a common macro factor dominates and falls when it does not — it is a function of what is driving markets, not a trend. Periods dominated by Fed policy show high co-movement; periods dominated by crypto-specific or single-sector stories show much less. Expect the number to keep oscillating rather than converge.
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