{
  "id": "a8812629-da1b-50e0-8913-b63ee409b997",
  "slug": "yield-curve-flattener",
  "term": "Yield Curve Flattener",
  "aliases": [],
  "category": "Fixed Income",
  "category_slug": "fixed-income",
  "difficulty": "intermediate",
  "definition": "A yield curve flattener is a fixed income trading strategy that profits when the yield curve flattens—that is, when the spread between long-term and short-term interest rates narrows, either because short-term rates rise relative to long-term rates or because long-term rates fall relative to short-term rates.",
  "key_takeaways": [
    "A bear flattener occurs when short-term rates rise faster than long-term rates (typical during Fed tightening cycles); a bull flattener occurs when long rates fall faster than short rates.",
    "Flatteners are implemented by shorting short-duration bonds (or futures) and going long long-duration bonds, with notional positions sized to be DV01-neutral.",
    "The trade's profit is determined by the change in slope (spread between two yields), not by the absolute direction of rates.",
    "Flattener trades perform well during late economic cycles when central banks tighten policy and growth expectations for long-term growth are revised down.",
    "Carry and roll-down effects must be considered: in a normal (upward-sloping) curve, short positions in short bonds incur negative carry while long positions in long bonds have positive carry."
  ],
  "detailed_explanation": "A yield curve flattener trade is a relative value position in the fixed income market that expresses a view on the slope of the yield curve rather than the absolute level of interest rates. The strategy is constructed so that it is immunized against parallel shifts in the yield curve (where all maturities move equally) and profits only from changes in the spread between two specific maturities. This structural feature makes flatteners appealing to macro hedge funds and fixed income relative value managers who seek to isolate specific rate dynamics without taking directional interest rate risk.\n\nThe most common flattener expresses a view on the 2-year vs 10-year portion of the Treasury curve (the '2s10s' trade). To position for flattening, a manager sells short-dated Treasuries (e.g., 2-year notes) and buys long-dated Treasuries (e.g., 10-year notes) in proportions calibrated to equalize the DV01 (dollar value of a basis point) of each leg. For example, if the DV01 of a $1 million 2-year note is $190 and the DV01 of a $1 million 10-year note is $850, then for each $1 million of 10-year notes purchased, approximately $4.47 million of 2-year notes must be shorted to achieve DV01 neutrality: $850 / $190 = 4.47.\n\nBear flatteners occur in the early-to-mid stages of Federal Reserve tightening cycles. As the Fed raises the overnight rate, short-term yields (which are closely linked to the policy rate) rise quickly, while long-term yields rise more slowly because market participants expect that the tightening will eventually slow the economy and necessitate future rate cuts. The curve flattens as short rates catch up to long rates. This dynamic was evident in 2004–2006 and again in 2022–2023, when the Fed's rapid rate hikes pushed short yields above long yields, ultimately inverting the curve.\n\nBull flatteners occur when long-term yields fall more than short-term yields, typically during 'flight to quality' episodes—such as geopolitical shocks, financial crises, or recessionary scares—when investors rush to purchase long-duration Treasuries for safety. In a bull flattener, both legs of the trade move in the flattener's favor simultaneously: the long-dated bond position appreciates as yields fall, and the short position in short-dated bonds suffers less because their yields do not fall as much.",
  "example": "In January 2022, with the 2s10s Treasury spread at +80 basis points (2-year at 0.90%, 10-year at 1.70%), a macro fund expects the Federal Reserve to embark on an aggressive tightening cycle. The fund implements a bear flattener: it shorts $100 million of 2-year Treasury notes (DV01 ≈ $19,000) and buys $22.5 million of 10-year Treasury notes (DV01 ≈ $19,000), achieving DV01 neutrality across both legs. By September 2022, the 2-year yield has risen to 4.20% (up 330 bps) and the 10-year to 3.83% (up 213 bps)—the spread has narrowed from +80 bps to −37 bps, a flattening of 117 basis points. The DV01 of the spread position is approximately $19,000; over a 117-bps flattening move, the fund earns approximately $2.22 million (117 × $19,000 = $2,223,000) from the curve move alone, excluding financing costs and coupon income.",
  "formula": "\\text{Spread} = y_{\\text{long}} - y_{\\text{short}}; \\quad \\text{DV01-neutral ratio} = \\frac{DV01_{\\text{long}}}{DV01_{\\text{short}}}",
  "formula_latex": null,
  "interactive_type": "model",
  "calculator_id": null,
  "related_terms": [
    "basis",
    "bond",
    "duration",
    "dv01",
    "interest-rate",
    "junk-bond",
    "libor",
    "macro-fund",
    "putable-bond",
    "relative-value",
    "yield",
    "yield-curve",
    "yield-curve-steepener"
  ],
  "backlinks": [],
  "cross_references": [
    "basis",
    "bond",
    "duration",
    "dv01",
    "interest-rate",
    "macro-fund",
    "relative-value",
    "yield",
    "yield-curve"
  ],
  "tags": [
    "level:intermediate",
    "cat:fixed-income"
  ],
  "asset_classes": [
    "fixed-income"
  ],
  "regulators": [],
  "see_also": [],
  "sources": [],
  "wordcount": 731,
  "checksum": "bd524570ed83c78c",
  "version": "2026.05.03",
  "license": "CC-BY-4.0",
  "updated_at": "2026-09-07T02:15:24+00:00",
  "_links": {
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    "category": "https://hedgefund.wiki/api/v1/categories/fixed-income",
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}