XRP vs. Solana: Which Altcoin Wins the Pre-Fed Rally Ahead of the September 16 Decision?

XRP and Solana have both climbed over 30% in the past month, facing a defining week as the Federal Reserve announces its rate decision on September 16. The Senate will also hold a cloture vote on the CLARITY Act on September 15, which would determine XRP’s regulatory status for years to come. While the House recently canceled September votes—likely delaying the crypto market structure bill and leaving XRP more exposed to Senate legislative swings—XRP currently holds the stronger pre-Fed setup. However, a hawkish Federal Reserve tone or a stalled Senate vote would pressure XRP harder than Solana.

Each coin’s fate looks different once shared market strength is set aside, so we argue for XRP first, then Solana, before settling on a verdict.

Why XRP Could Be the Best Crypto to Buy Before the Fed Decides on September 16?

XRP’s case rests on a Senate vote, robust ETF demand, and a network upgrade, each carrying its own timeline and providing more near-term catalysts than most large-cap tokens currently have on the calendar.

The CLARITY Act’s September 15 Vote

The Senate’s cloture vote on the CLARITY Act requires seven Democratic senators to cross party lines to reach 60 votes, with an ethics language dispute currently holding up the process. Senators Chris Murphy, Jeff Merkley, Chris Van Hollen, and Elizabeth Warren have objected to the current draft, arguing it places enforcement solely with the Department of Justice and fails to prevent President Trump from profiting from his crypto holdings, which he disclosed at over $1.2 billion last year. Consequently, Galaxy Research’s odds of passage in 2026 have plummeted from 60% in July to just 10% this month, reflecting a shrinking Senate calendar and the unresolved ethics fight.

A successful cloture vote would not pass the bill outright, but it would clear the biggest procedural hurdle standing between XRP and a permanent commodity classification.

Record XRP ETF Inflows

XRP’s spot ETFs pulled in $110.49 million during the week of August 24—their strongest weekly total in nine months—according to SoSoValue data. Bitwise’s XRP fund led with $59.9 million, followed by Franklin Templeton’s XRPZ at $28.7 million. Cumulative net inflows reached $1.66 billion by August 28, climbing to $1.70 billion by September 9, with total net assets standing at $1.51 billion. This inflow pace pushed XRP to roughly $1.66 in August before it pulled back toward $1.40, demonstrating that institutional demand has remained strong even as the market watches the Senate calendar.

A Ledger Upgrade Set for September 11

The XRP Ledger’s fixCleanup3_3_0 upgrade has reached 82.86% validator consensus, surpassing the 80% threshold needed to begin a two-week activation window, with activation possible as soon as September 11. While a maintenance change rather than a headline feature, its timing places a concrete technical milestone directly between the ETF inflow data and the Senate vote, adding a third data point to a week already dense with XRP-specific news.

Why Solana Could Be the Best Crypto to Buy Before the Fed Decides on September 16?

Solana’s case relies on institutional demand and network usage, both of which have built steadily since last October, alongside a technical upgrade still ahead.

ETF Inflows Keep Climbing

Solana’s ETF demand strengthened in late August and carried into early September. The funds recorded inflows on every trading day from August 24 through September 1, adding about $72.94 million across those seven sessions per SoSoValue data. Cumulative net inflows have reached $1.36 billion, while total net assets stood at about $1.44 billion. This flow data indicates that investors continue to allocate capital into Solana ETFs, strengthening the case that ETF demand is becoming a crucial part of Solana’s market structure and could sustain itself regardless of the Federal Reserve’s decision on September 16.

The Alpenglow Upgrade

Solana’s Alpenglow upgrade would cut transaction finality to 150 milliseconds, a change developers frame as a meaningful step toward institutional-grade settlement speed. Although the upgrade will not launch until October 2026, it still functions as a catalyst, and its arrival alongside continued ETF inflows could extend the network’s momentum following the Fed’s decision on September 16.

Which Coin Are We Favoring?

We favor Solana because its catalysts do not depend on seven senators changing position in a single vote, and its ETF and staking data show demand that has already cleared a full market cycle. While XRP’s ETF inflows and ledger upgrade are real, the CLARITY Act carries far more weight in XRP’s setup than any single catalyst carries in Solana’s, and Galaxy Research’s own 10% odds make that vote the biggest single risk facing either coin this month.

Our view would change quickly if the Senate surprises the market on September 15. A successful cloture vote would remove years of regulatory overhang from XRP in a single session, something no Solana catalyst can replicate on a comparable timeline, and it could push XRP past Solana’s near-term gains even if the odds against it remain long. Conversely, our view would shift if Solana’s ETF inflows reverse or its stablecoin and DEX-volume share erodes, since that data forms the core of its current advantage rather than a one-time event. Both coins remain exposed to the Federal Reserve’s decision on September 16, which could tighten conditions for both regardless of which catalyst plays out first.

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