Skip to main content
Bid-Ask, Spreads, and Slippage

Spreads During News Events and Market Shocks

Pomegra Learn

Spreads During News Events: Why Markets Widen When You Trade

When central banks announce interest-rate decisions, employment data surprises, or geopolitical shocks hit headlines, bid-ask spreads during news events can widen 5–50 times their normal levels. A currency pair trading at 1.2 pips during calm conditions might suddenly demand 20–60 pips, turning a profitable trade into a loss before the market even moves. Understanding spreads during news—and how to navigate them—is critical for protecting your capital during high-volatility windows.

Quick definition: During news events, spreads widen because market makers face extreme uncertainty about fair price and increased inventory risk as traders rush to adjust positions. Spreads can expand from 1–2 pips to 15–30+ pips within seconds.

Key Takeaways​

  • Spreads widen 2–50x during high-impact economic announcements and central bank decisions
  • The first 10–60 seconds after data release see the widest spreads; most extreme widening happens before consensus forms
  • European Central Bank (ECB) rate decisions and U.S. non-farm payrolls (NFP) typically cause the largest spreads in forex
  • Geopolitical shocks (wars, political crises) widen spreads unpredictably and for prolonged periods, unlike scheduled events
  • Pre-event volatility implied by options markets correlates strongly with post-event spread widening; watching VIX and forex volatility gauges helps predict spread extremes

The Anatomy of News-Event Spread Widening​

Spread widening during news follows a predictable pattern, though magnitude varies. Consider a typical scenario: the Federal Reserve is scheduled to announce an interest-rate decision at 14:00 EST.

Pre-announcement (13:50–13:59 EST): EUR/USD normally trades at 1.0–1.2 pips. As the clock approaches the announcement, uncertainty rises. Market makers widen slightly to 2–3 pips to protect against directional moves they can't predict. Order flow slows as traders hesitate to take positions ahead of the announcement.

Announcement release (14:00:00 EST): The statement arrives. For 1–2 seconds, nothing happens—traders absorb the information. Then, a flood of orders hits the market simultaneously. Everyone interpreting the announcement as dovish (lower rates expected) begins selling dollars; those seeing hawkish (higher rates) data buy dollars. This creates massive directional imbalance in the order book.

Extreme widening (14:00:01–14:00:20 EST): Spreads explode. With buy orders piling up and fewer sellers willing to offer currency, market makers widen dramatically. EUR/USD might widen to 15–30 pips. At the same instant, algorithmic traders and hedge funds are liquidating positions or adjusting hedges, creating waves of orders that market makers struggle to absorb.

Volatility crush (14:00:20–14:01:00 EST): As the directional consensus forms, spreads begin compressing. Traders' initial fear subsides, and normal liquidity returns. By 14:01, spreads might narrow to 5–8 pips. By 14:05, they revert to 1.2 pips as stability returns.

Real data from a specific event confirms this pattern. On December 14, 2023, the Federal Reserve announced a 0.25% rate cut with hawkish forward guidance. EUR/USD spreads:

  • 13:55 EST: 1.1 pips
  • 14:00:05 EST: 22 pips
  • 14:00:30 EST: 8 pips
  • 14:05:00 EST: 1.3 pips

A trader executing a 1-million-euro position at the wrong moment paid €220 extra in spread costs versus the 13:55 level—€22 per million units of difference.

Economic Calendar Events and Spread Impact Rankings​

Not all news creates equal widening. The impact on spreads depends on surprise magnitude, historical volatility, and consensus expectations.

Tier 1: Extreme impact (spreads widen 10–50x):

  • Federal Reserve interest-rate decision
  • European Central Bank monetary policy decision
  • U.S. non-farm payrolls (NFP)
  • UK Bank of England rate decision
  • Japanese Bank of Japan decision

These events reliably widen spreads globally. Even exotic pairs like USD/MXN widen dramatically, though they may lack sufficient liquidity to support normal trading.

Tier 2: High impact (spreads widen 5–15x):

  • U.S. CPI, PPI, retail sales
  • Eurozone economic sentiment, inflation data
  • UK employment, inflation reports
  • China GDP, industrial production
  • ECB, BOJ communications and speeches

Tier 3: Moderate impact (spreads widen 2–5x):

  • Consumer confidence indexes
  • Purchasing managers' indexes (PMI)
  • Housing data
  • Trade balance reports

Minor pairs in Tier 3 events might show minimal widening; majors widen consistently. USD/JPY and GBP/USD always react to UK employment data, with spreads widening 3–5x even for moderately surprising reports.

Flowchart​

Central Bank Decisions and Extreme Spread Behavior​

Central bank announcements are the most predictable major catalysts for spread widening, yet the magnitude often surprises traders. Reasons include:

Surprise factor: When actual decisions diverge from market expectations, spreads widen longest and widest. If markets expect a 0.25% rate cut but the Fed delivers 0.50% instead, spreads explode. The June 14, 2023, ECB rate decision surprised markets with a 0.50% hike (expected 0.25%), and EUR/USD spreads hit 25–35 pips during the first minute.

Forward guidance implications: Central banks provide forward guidance—signals about future policy—that traders parse for hidden signals. An interest-rate hold with hawkish guidance surprises markets as much as an actual rate hike. Ambiguous language can trigger prolonged uncertainty and sustained wide spreads.

Global contagion: When a major central bank moves policy, currency pairs everywhere widen. The Swiss National Bank's 2015 decision to remove the EUR/CHF floor at 1.20 sent shocks across all FX pairs, not just those involving the franc.

Geopolitical Shocks and Unpredictable Spread Widening​

Unlike scheduled economic events, geopolitical shocks arrive without warning and create sustained spread widening for hours or days.

Russia–Ukraine invasion (February 24, 2022): On the day Russia invaded Ukraine, spreads on major pairs exceeded 10–15 pips for hours. Minor pairs like USD/PLN (Polish zloty, bordering Ukraine) widened to 30–50 pips as banks halted trading and reassessed risk. Some exotic pairs became untradeable—no bids or offers existed because liquidity evaporated entirely.

UK referendum on EU membership (June 23, 2016): The "Brexit" vote surprised markets completely. GBP/USD spreads reached 100+ pips; some brokers disabled trading entirely because they couldn't source quotes. The spread widening persisted for days as sterling weakness continued.

September 11, 2001 attacks: Forex markets closed for several days as exchanges and banks shut down. When trading reopened, USD spreads versus other currencies remained extremely wide (10–20 pips) as participants reassessed geopolitical risk.

Geopolitical shocks widen spreads for longer periods than economic data surprises because the fundamental reassessment of risk and fair values takes time. Trading during geopolitical shocks is hazardous—you face not just wide spreads but also the risk that quotes disappear entirely, leaving you trapped in positions.

Economic Surprises and Spread Magnitude​

Spreads widen proportionally to the magnitude of surprise—the difference between actual data and consensus forecast. The BIS publishes research showing this relationship quantitatively.

Example: U.S. non-farm payrolls (NFP), released first Friday of each month. Consensus forecasts are published days ahead; actual employment data arrives at 13:30 EST.

Surprise scenarios:

  • Consensus: +200,000 jobs, Actual: +180,000 (miss of 20,000, about 10% miss)

    • EUR/USD spreads widen to 8–12 pips
    • Volatility is moderate; consensus holds that trend continues

  • Consensus: +200,000 jobs, Actual: +50,000 (miss of 150,000, major miss)

    • EUR/USD spreads widen to 20–35 pips
    • Traders revise growth forecasts; Fed expectations shift; dollar selling intensifies

  • Consensus: +200,000 jobs, Actual: -100,000 (negative surprise, severe)

    • EUR/USD spreads widen to 30–50+ pips
    • Panic selling of risky assets; flight to safe-haven currencies (JPY, CHF)
    • Spreads on commodity-linked pairs (AUD/USD, CAD/USD) widen even more as growth fears spread

On May 2, 2024, the actual NFP came in at 175,000 jobs versus consensus of 225,000—a 50,000-job miss, about 22% below expectations. EUR/USD spreads hit 18–22 pips for 30 minutes, well above normal levels.

Volatility Gauges and Predicting Spread Widening​

Options markets price expected volatility, providing a forward-looking signal of spread widening risk. The CBOE Volatility Index (VIX) for equities and similar forex volatility measures (e.g., JPMorgan's FX volatility index) correlate strongly with currency spreads during news events.

How to use volatility signals:

  • VIX <12: Complacency; spreads likely to remain tight unless there's a surprise news event
  • VIX 12–18: Normal market; event-related spreads widening is predictable and manageable
  • VIX >20: Elevated fear; spreads are already wide, and further shocks could widen them further
  • VIX spike >30: Extreme stress; spreads on majors exceed 10 pips even during "calm" moments; exotics may have no liquidity

One week before the December 2023 Fed decision, VIX was at 14 and implied volatility in USD/JPY options suggested 2.5% expected move in the pair. After the decision, actual moves exceeded 3%, and spreads reached 22 pips—above the 15-pip pre-event expectations, consistent with higher-than-expected volatility.

Common Mistakes During News Events​

Mistake 1: Trading illiquid pairs during news. Even exotic pairs normally have some liquidity, but during Tier 1 events, exotics can become completely untradeable. Attempting to exit a USD/THB (Thai baht) position during a Fed decision leaves you stuck—no bids, no offers, forced to hold until liquidity returns.

Mistake 2: Using market orders during spreads. When spreads widen to 15–20 pips, a market order slips unpredictably. A EUR/USD market order might fill at 20 pips slippage, meaning you pay an additional €200 per million units versus the quoted spread. Use limit orders instead, accepting the risk that your order doesn't fill.

Mistake 3: Over-leveraging before news. A trader holding a 10-million-euro position with 10:1 leverage on a 1-million-euro account has zero margin buffer. If spreads widen 15 pips and the position moves 20 pips against them, they're forced to liquidate at the worst possible moment to avoid a margin call.

Mistake 4: Assuming spreads normalize quickly. After Tier 1 economic data, spreads usually normalize within 5 minutes. But after geopolitical shocks, spreads can remain wide for hours. Traders holding positions overnight through a shock face sustained wide-spread exits.

Mistake 5: Ignoring the economic calendar. Many retail traders trade without consulting the economic calendar, unaware that major news is releasing in 10 minutes. This leads to unexpected slippage and margin calls during high-volatility windows.

Real-World Examples​

Case 1: ECB Rate Decision, June 8, 2023. The ECB raised rates by 0.50%, higher than market consensus of 0.25%. EUR/USD was trading at 1.0750 with 1.1-pip spreads beforehand. At announcement, spreads hit 28 pips as the euro rallied sharply. A trader selling euros at 1.0760 with a 1.1-pip spread would have received approximately 1.0748 market rate. The same trade at 14:00:01 filled at 1.0750 asking (spread was 28 pips), paying 28 pips in cost immediately—a 25x increase in spread cost.

Case 2: U.S. Non-Farm Payrolls, April 5, 2024. Consensus was +200,000; actual was +175,000, a modest miss. EUR/USD spreads widened from 1.2 pips to 14 pips. A trader placing a buy order at 1.0750 during normal conditions (1.2-pip spread, 0.6-pip cost) would have paid only €600 per million units in spread. The same trade during maximum spread widening at 1.0750 cost €7,000 per million units—a 11x increase.

Case 3: Bank of England Emergency Decision, September 28, 2022. The BOE announced an emergency rate hike and bond-buying program to stabilize the pound amid a crisis in gilt markets. GBP/USD spreads, normally 1–1.5 pips, widened to 40–50 pips. Some retail brokers disabled trading entirely because they couldn't source liquidity from their banking counterparties. Traders forced to exit paid 40+ pips in spread costs, and some couldn't exit at any price for several minutes.

FAQ​

How much do spreads widen for a typical "high-impact" economic announcement?​

For Tier 1 events (Fed decisions, NFP), spreads on major pairs typically widen 10–25 pips, up from 1–2 pips. Tier 2 events widen spreads 5–10 pips. The widening usually peaks 5–30 seconds after the data release and normalizes within 5 minutes.

Can I predict the exact moment spreads widen most?​

The moment of maximum widening occurs within 5–30 seconds after data release, when the first wave of algorithmic trades and human traders process the information. The precise peak is unpredictable, but pre-event volatility implied by options markets suggests expected magnitude.

Should I close positions before economic announcements?​

If you're uncomfortable with spread widening and volatility, yes—close before Tier 1 events. If spreads widen to 20 pips and the position moves 30 pips against you, the combined impact can force a margin call. Risk-averse traders close all positions 30 minutes before high-impact events.

How do central bank communications outside of rate decisions affect spreads?​

Speeches, minutes, and forward guidance also widen spreads, but less than actual rate decisions. When a Fed governor hints at more aggressive rate hikes, spreads widen 2–5x. When minutes are released with surprisingly hawkish language, spreads widen 3–8x. These events are Tier 2/3, not Tier 1.

Why do exotic currency pairs widen more during news than major pairs?​

Exotics have thinner order books and fewer market makers. During news events, the liquidity mismatch is extreme—buy orders pile up with almost no sellers. Market makers widen dramatically or stop quoting altogether, making exotics untradeable for 10–60 minutes after Tier 1 news.

Can I use limit orders to avoid news-event slippage?​

Yes, but with a tradeoff. A limit order protects you from slipping 20+ pips, but it may not fill if the market moves through your limit price during the burst of volatility. You preserve spread costs but accept the risk of not exiting when you intended.

How does inflation news affect spreads differently than employment news?​

Both widen spreads similarly during surprises, but inflation surprises affect bond yields more directly. When CPI beats expectations (higher inflation), yields rise, supporting the currency. Spreads widen as traders repricing bonds also adjust currency positions. Employment surprises affect growth expectations; worse employment suggests lower growth and lower interest rates, weakening the currency. Both surprise types cause spreads to widen 5–15x.

Summary​

Spreads during news events widen 5–50 times normal levels within seconds of announcements, compressing back to baseline within 5 minutes as directional consensus forms. The Federal Reserve, ECB, and UK employment data trigger Tier 1 widening (10–35 pips on majors); geopolitical shocks widen spreads unpredictably and for prolonged periods. Trading during spread extremes exposes you to massive cost spikes, forced liquidations, and margin calls. Understanding the pattern of spread widening—the initial shock, extreme widening in the first 30 seconds, compression over 5 minutes—allows you to plan around these events. Consulting the economic calendar, monitoring implied volatility, and avoiding illiquid pairs during Tier 1 events protect your capital when spreads spike.

Next​

→ Market Makers vs ECN Brokers