Stock Analysis
Data Source: SEC EDGAR 13F
Updated Hourly

Lantheus Hldgs Inc (LNTH)

398 + Investors. Track Smart Money conviction in LNTH. See who's accumulating, reducing, or initiating positions.

Current Price
-- USD
Analyst Target
-- (0 analysts)
Upside
0.00%
Net Flow Q/Q
↑ +13
Streak
1Q ▲
Buyers last Q
53%

Smart Money Signals — LNTH

Based on 400 hedge funds · latest filing: 2026 Q1 · updated quarterly

📈

Buying streak — 1 quarter in a row

last 6Q
For 1 consecutive quarter, more hedge funds added LNTH than sold it. That's a consistent pattern of professional buying — not a one-time trade. When institutions keep buying quarter after quarter, it usually means they see a multi-year opportunity, not just a short-term momentum flip.
📊

High ownership — 77% of 3.0Y peak

77% of all-time peak
400 funds currently hold this stock — 77% of the 3.0-year high of 519 funds (reached 2025 Q1). Ownership is elevated but not yet at maximum concentration. Room to grow, but watch if the trend reverses.
📉

Outflows — 23% fewer funds vs a year ago

fund count last 6Q
119 fewer hedge funds hold LNTH compared to a year ago (-23% decline). When institutions consistently reduce their exposure, it's worth exploring the underlying fundamental reasons driving them away.
🟡

Slight buying edge — 53% buying

213 buying188 selling
Last quarter: 213 funds bought or added vs 188 that reduced or exited. It's nearly a 50/50 split — some institutions are convinced, others are taking profits. This mixed picture is normal near price highs.
⚠️

Fewer new buyers each quarter (-7 vs last Q)

new funds entering per quarter
Funds opening this position for the first time: 46 → 76 → 76 → 69. Each quarter fewer new institutions are entering. This usually means most funds that wanted in are already in — the stock is well-known but the pool of potential new buyers is shrinking.
🔒

58% of holders stayed for 2+ years

■ 58% conviction (2yr+) ■ 22% medium ■ 20% new
233 out of 400 hedge funds have held LNTH for over 2 years without selling. Long-term investors are generally harder to shake out during market stress, creating a stable ownership base that limits the risk of sudden capitulation.
📈

Growing discovery — still being found

90 → 46 → 76 → 76 → 69 new funds/Q
New funds entering each quarter: 46 → 76 → 76 → 69. A growing number of institutions are discovering LNTH each quarter. The narrative is still spreading — leaving room for ongoing capital accumulation.
🏛️

Veteran-anchored — 62% veterans vs 23% newcomers

■ 62% veterans ■ 15% 1-2yr ■ 23% new
Entry-cohort mix of 408 holders: 253 (62%) are 2+ year veterans, 61 entered 1–2 years ago, and 94 (23%) joined within the past year. A veteran-weighted cap table skews toward institutional memory over fresh momentum.
🏆

Elite ownership — 42% AUM from top-100 funds

42% from top-100 AUM funds
55 of 399 holders are among the 100 largest funds by AUM, controlling 42% of total institutional value in LNTH. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.
2.4
out of 10
Low Exit Risk
Exit risk score 2.4/10 — low institutional crowding. Ownership is below peak levels, holder base is relatively sticky, and buying momentum is positive.

Methodology note: these Smart Money cards use consecutive 13F disclosure snapshots, not trade-by-trade execution data. "Buying", "selling", "new holders", and "trimmed" refer to quarter-over-quarter changes in reported holders, aggregate shares, or disclosed position values between filings. They are useful for ownership regime analysis and crowding, but they do not imply exact trade timing on the filing date.

Institutional Sentiment Summary — LNTH

In 2026 Q1, 213 hedge funds were net buyers of LNTH (69 opened a new position, 144 added to an existing one), while 188 reduced or exited (132 trimmed, 56 sold completely) — a 53% buyer ratio, indicating a slight buying edge. 42% of total institutional value in LNTH is held by top-100 AUM funds, reflecting elite-tier ownership quality. Net fund flow last quarter: +13 funds (more new holders than closures). Total institutional holders: 400.

Hedge Fund Ownership: LNTH

How many hedge funds hold LNTH — quarterly history vs. share price
Quarterly hedge fund ownership of LNTH vs. share price

Market Analysis: LNTH

Analyst Price Targets

Avg. Price Target
--

Analyst Recommendations

Stock Performance

Real-time

Company Profile: LNTH

-- --

Institutional ownership data sourced from SEC EDGAR Form 13F-HR filings.

Is It Too Late to Buy Lantheus Hldgs Inc (LNTH) Based on Hedge Fund 13F Filings?

Signal Freshness measures how much LNTH has moved relative to its sector benchmark (XLV) since the 2026 Q1 13F filing. A stock that has barely outrun its sector is still a relatively fresh entry point — the fund's thesis has not yet been priced in by the broader market.

Since Quarter End March 31, 2026 · 74d ago
LNTH
+37.8%
XLV
+4.9%

LNTH outperformed XLV by +32.9% since March 31, 2026.

Since 13F Filing Date May 15, 2026 · 29d ago
LNTH
+11.3%
XLV
+6.0%

Since the filing became public, LNTH outperformed XLV by +5.3% .

Interpretation: The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference. Learn more →

Smart Money Signal ?
Limited Smart Money Interest

No strong consensus or elite conviction detected among institutional holders.

34 top-rated funds 6 high-conviction
Consensus
6.7
/ 10
breadth
×
Elite
4.1
/ 10
conviction
Hedge Fund Positioning: LNTH
398 + Investors

Track Smart Money conviction in LNTH. See who's accumulating, reducing, or initiating positions.

Metric All 13F Filers (2026 Q1) Prior (2025 Q4) Change
Funds Holding 398 387 2.84%
13F Shares 71M 75M -5.34%
Total Value $5.27B $4.94B 6.56%
New Positions 68 76 -8
Increased Positions 141 109 +32
Closed Positions 57 101 -44
Reduced Positions 130 151 -21
Total Calls 5 6 -16.67%
Total Puts 4 4 -
PUT/CALL Ratio 0.8 0.67 Neutral

Statistics: LNTH

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Short % of Float --

Financial Highlights

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Institutional Holders (2026 Q1)

398 + investors

Explore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in LNTH. Verified SEC 13F-HR filings.

QUARTER:
Top 25 LNTH holders by conviction (% of portfolio weight) — 2026 Q1 · Source: SEC Form 13F
# Investor % of Portfolio Shares Mkt Value
1 Sarissa Capital Management LP 8.03% 166,919 $12.7M
2 Summit Street Capital Management, LLC 4.46% 415,474 $31.5M
3 Polaris Capital Management, LLC 3.83% 617,000 $46.8M
4 Brigade Capital Management, LP 3.42% 363,745 $27.6M
5 Reinhart Partners, LLC. 3.41% 1,564,878 $118.7M
6 Private Capital Management, LLC 2.70% 357,644 $27.1M
7 Defilade Capital Management, L.P. 2.66% 249,401 $18.9M
8 Lion Point Capital, LP 2.49% 5,500 $417K
9 Farallon Capital Management LLC 2.41% 5,583,479 $423.5M
10 Expect Equity LLC 2.33% 32,073 $2.4M
11 Villanova Investment Management Co LLC 1.81% 23,229 $1.8M
12 Portolan Capital Management, LLC 1.68% 417,390 $31.7M
13 Sector Gamma As 1.67% 93,344 $7.1M
14 Silverberg Bernstein Capital Management LLC 1.34% 32,179 $2.4M
15 Longaeva Partners L.P. 1.08% 383,945 $29.1M
16 Sidoxia Capital Management, LLC 1.00% 15,262 $1.2M
17 Brigade Capital Management, LP 0.94% 100,000 $7.6M
18 SkyOak Wealth, LLC 0.89% 64,284 $4.9M
19 Stanley-Laman Group, Ltd. 0.80% 85,474 $6.5M
20 1492 Capital Management LLC 0.79% 27,424 $2.1M
21 Clark Estates Inc/Ny 0.77% 42,000 $3.2M
22 Deerfield Management Company, L.P. 0.74% 827,999 $62.8M
23 S&T Bank/Pa 0.62% 22,027 $1.7M
24 Martin Capital Advisors, LLP 0.62% 12,992 $985K
25 Diker Management LLC 0.56% 8,222 $624K
Investor Ownership
History 		% of Portfolio Prev % Rank Conviction Avg Buy Price 13F Score™ 3Y / 7Y Sell Timing Shares Mkt Value Change Change % Source Quarter Filed

Frequently Asked Questions — Lantheus Hldgs Inc (LNTH)

What does the Smart Money Trend signal show for LNTH?

Buying streak — 1 quarter in a row: For 1 consecutive quarter, more hedge funds added LNTH than sold it. That's a consistent pattern of professional buying — not a one-time trade. When institutions keep buying quarter after quarter, it usually means they see a multi-year opportunity, not just a short-term momentum flip.

What is the institutional breadth score for LNTH?

Slight buying edge — 53% buying: Last quarter: 213 funds bought or added vs 188 that reduced or exited. It's nearly a 50/50 split — some institutions are convinced, others are taking profits. This mixed picture is normal near price highs.

What is the fund quality score for LNTH holders?

Elite ownership — 42% AUM from top-100 funds: 55 of 399 holders are among the 100 largest funds by AUM, controlling 42% of total institutional value in LNTH. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.

How long have hedge funds held LNTH?

58% of holders stayed for 2+ years: 233 out of 400 hedge funds have held LNTH for over 2 years without selling. Long-term investors are generally harder to shake out during market stress, creating a stable ownership base that limits the risk of sudden capitulation.

Is it too late to buy Lantheus Hldgs Inc (LNTH) following the 2026 Q1 hedge fund 13F filings?

As of today, LNTH has moved +11.3% since the 2026 Q1 13F filing date (May 15, 2026), compared to +6.0% for the XLV sector ETF — an outperformance of +5.3%. Since the quarter end (March 31, 2026), LNTH has gained +37.8% vs +4.9% for XLV. The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference.

Where does this institutional ownership data come from?

All holdings data is sourced from SEC Form 13F filings, which institutional investment managers with over $100 million in assets are required to submit quarterly. Data is parsed directly from SEC EDGAR.

Disclaimer: The information on this page is for informational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any security. Institutional holdings data is sourced from SEC Form 13F filings and reflects positions as of the filing date. Past performance of any fund or portfolio is not indicative of future results. 13Foresight is not a registered investment adviser. Always conduct your own due diligence before making investment decisions.

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