20+ Year US Treasuries (TLT)

Key Updates

TLT has gained 2.06% since the December 7 report to $89.98, recovering from the previous 4.26% decline but remaining below October levels. The rally reflects a significant shift in bond market dynamics as investors rediscover traditional diversification benefits amid elevated starting yields and restored term premium. However, structural headwinds persist including massive tech debt issuance ($121 billion in 2025), anticipated increases in Treasury auction sizes, and concerns about long-duration bonds' reliability as portfolio stabilizers under new Fed leadership.

Current Trend

TLT demonstrates positive momentum across all timeframes: +0.30% (1d), +2.82% (5d), +2.49% (1m), +4.15% (6m), and +3.24% YTD. The fund has recovered approximately half of December's 4.26% decline, trading at $89.98 versus $88.17 on December 7. The recent advance aligns with bonds' restored role as portfolio stabilizers during equity volatility episodes, particularly during DeepSeek concerns and tariff uncertainties. However, TLT remains significantly below the $92.09 level from October 21, indicating persistent resistance in the low-$90s range. The Morningstar US Core Bond Index delivered over 7% returns in 2025, its strongest performance since 2020, supported by elevated starting yields and Fed rate cuts as inflation moderated.

Investment Thesis

Long-duration Treasuries have regained their traditional portfolio diversification role following the restoration of meaningful term premium, with 5% coupons providing substantial cushion against rate increases. The investment case centers on three pillars: elevated starting yields offering significant income generation, price appreciation potential from further Fed rate cuts if inflation continues moderating, and protection during equity market weakness. However, this thesis faces critical challenges from structural supply dynamics, including anticipated increases in Treasury auction sizes beyond current T-bill reliance (over 80% of 2025 issuance), massive corporate bond supply from AI infrastructure spending ($630 billion expected in 2026), and potential policy shifts under incoming Fed Chair Kevin Warsh, historically viewed as hawkish on rates and balance sheet normalization.

Thesis Status

The investment thesis has partially validated but faces mounting structural challenges. The positive case materialized through bonds' successful performance as portfolio stabilizers during recent volatility and the restoration of income cushion from elevated yields. Vanguard's analysis confirms bonds protected portfolios during equity weakness from DeepSeek and tariff concerns. However, significant headwinds have emerged: BlackRock warns that long-term Treasuries no longer provide reliable diversification against stock volatility due to tariffs, interest rates, and geopolitics. The nomination of Kevin Warsh as Fed Chair introduces policy uncertainty, as TLT experienced over $8 billion in outflows over the past year, with $2 billion exiting in January alone. Most critically, term premium volatility remains elevated despite recent stabilization, with the Treasury expected to borrow $574 billion in privately-held net marketable debt between January and March.

Key Drivers

The bond market faces competing dynamics that will determine TLT's trajectory. Supply pressures dominate near-term concerns, with Big Tech companies issuing $121 billion in corporate bonds in 2025, expected to accelerate in 2026 as AI infrastructure spending reaches $630 billion. Alphabet alone raised $48 billion across multiple offerings, including a rare 100-year sterling bond. The Treasury Department's refunding announcement carries significant implications, with potential increases in auction sizes for 2-year through 30-year securities threatening to push yields higher if demand proves insufficient. Policy uncertainty intensified with Kevin Warsh's nomination as Fed Chair, expected to favor steeper yield curves and less balance sheet intervention. Offsetting these headwinds, investors withdrew $3 billion from long-term government bond ETFs in January while adding to short and intermediate duration, suggesting positioning adjustments may be complete. Bond volatility returned to historic lows, with weekly yield changes under six basis points for seven consecutive weeks, the longest stretch since mid-2020.

Technical Analysis

TLT trades at $89.98, having established a near-term support base around $88.17 (December 7 low) and facing resistance in the $90-92 zone. The fund's failure to reclaim October's $92.09 level despite positive momentum indicates persistent selling pressure at higher prices. Recent price action shows strengthening momentum with the 5-day gain (+2.82%) outpacing the 1-month advance (+2.49%), suggesting acceleration in buying interest. The 6-month performance (+4.15%) exceeds YTD returns (+3.24%), indicating the rally began in late 2025 and has maintained consistency into 2026. Key technical levels include immediate support at $88.17 (December low), secondary support at $86-87 (implied from 6-month range), resistance at $90-91 (psychological level), and major resistance at $92.09 (October high). The fund must decisively break above $92 to signal a trend reversal from the multi-month consolidation pattern. Volume dynamics show institutional repositioning, with TLT experiencing net outflows despite price gains, suggesting technical buying rather than fundamental conviction.

Bull Case

• Restored diversification benefits with elevated income cushion: Vanguard confirms bonds returned to traditional portfolio stabilizer role in 2025, with 5% coupons providing substantial cushion against rate increases, contrasting sharply with zero-lower-bound environment post-2008. The Morningstar US Core Bond Index gained over 7% in 2025, its best performance since 2020, driven by elevated starting yields and protection during equity weakness.
• Historic low volatility supports stable returns: Bond market volatility returned to historic lows with weekly yield changes under six basis points for seven consecutive weeks, the longest stretch since mid-2020. The ICE BofAML MOVE index dropped to 59.56, indicating relative calm that supports predictable income generation.
• Strong auction demand demonstrates sustainable appetite: Strong demand at the January 21 auction of 20-year bonds helped ease concerns about sovereign borrowing needs. The Vanguard Total Bond Market ETF saw its largest daily inflow since September 2024 at $868 million, reflecting investor preference for bonds over cash as yields stabilize.
• Positioning adjustments near completion: Investors withdrew $3 billion from long-term government bond ETFs in January while adding to shorter durations, suggesting bearish positioning may be exhausted. With TLT experiencing over $8 billion in outflows over the past year, much of the selling pressure appears absorbed.
• Improved deficit outlook from AI-driven growth expectations: Vanguard identifies improved deficit outlook from AI-driven growth expectations as a mitigating factor for term premium volatility, potentially supporting long-duration Treasuries as fiscal concerns moderate with enhanced productivity expectations.

Bear Case

• BlackRock declares long-term Treasuries unreliable for diversification: The world's largest asset manager warns that long-term Treasury bonds no longer provide reliable portfolio diversification against stock market volatility, citing concerns about tariffs, interest rates, and geopolitics. Greater financial system leverage creates vulnerabilities to government bond yield spikes.
• Massive supply wave from Treasury and corporate issuance: Treasury expects to borrow $574 billion in privately-held net marketable debt between January and March, with potential increases in auction sizes for securities ranging from 2-year notes to 30-year bonds. Simultaneously, AI hyperscalers issued $121 billion in U.S. corporate bonds in 2025, with at least $630 billion in combined capex expected in 2026.
• Hawkish Fed leadership threatens steeper yield curve: Kevin Warsh's nomination as Fed Chair signals potential policy shift toward higher rates and reduced balance sheet intervention. Historically viewed as hawkish, Warsh is expected to favor steeper yield curves, pushing long-end yields higher while rate cuts lower short-end yields.
• Persistent outflows demonstrate institutional skepticism: TLT experienced over $8 billion in outflows over the past year, with more than $2 billion exiting in January 2026 alone. Investors withdrew $3 billion from long-term government bond ETFs in January while preferring shorter durations, indicating structural preference shift away from long-duration exposure.
• Tariff policy undermines safe-haven status: Trump's tariff threats raised concerns about policy unpredictability and inflationary pressures, with analysts noting that tariff policies undermine Treasuries' traditional safe-haven status. The US is now viewed as a source of uncertainty rather than protection, with potential Japanese fund repatriation adding selling pressure.