Fairmount Funds Management LLC

CIK 0001802528 · Q1 2026

13F Equity AUM

$1.4B

+5.4% QoQ

Positions

-1 QoQ

AUM Rank

#2,274

Top 18%

Skill Alpha (FF)

+18.1%/yr^ns

No Clear Edge

Rank #118 · Top 1%

vs S&P +18.2%/yr (unadj.)

Quarters Tracked

~6 years

Portfolio Concentration

Top 5: 74.8%Top 10: 97.1%Top 20: 100.0%

DMRA16.3%

DNTH15.4%

COGT15.3%

SYRE14.6%

ORKA13.1%

VRDN5.5%

ELVN5.3%

JBIO4.6%

CBIO3.6%

ZBIO3.3%

Others (2)2.9%

HHI (Herfindahl-Hirschman Index) measures portfolio concentration. Low (<1500) = diversified, Moderate (1500-2500), High (>2500) = concentrated bets.

Sector Allocation

Healthcare100.0%

Portfolio weight by GICS sector based on latest 13F filing. Sectors below 2% are grouped as “Other.”

Position Sizing

Positions: 12Median: 5.39%Avg: 8.33%

0–0.5%

0(0.0%)

0.5–1%

0(0.0%)

1–3%

2(2.9%)

3–5%

3(11.6%)

5%+

7(85.5%)

Count of positions per weight bucket — (%) = combined portfolio weight

Loading summary cards...

Portfolio Overlap

Shared: 12Unique: 0vs 20 funds

0.2%Low

Fund positions

7,299

Consensus CUSIPs

Jaccard similarity of this fund’s portfolio vs the consensus of top 20 funds by AUM. Low (<15%) = contrarian, Moderate (15-40%), High (>40%) = follows the crowd.

Most Similar Funds

Top 9 benchmark funds with highest portfolio overlap (Jaccard similarity)

VANGUARD CAPITAL MANAGEMENT LLC

0.4%

GEODE CAPITAL MANAGEMENT, LLC

0.3%

BlackRock, Inc.

0.3%

STATE STREET CORP

0.3%

FMR LLC

0.4%

VANGUARD PORTFOLIO MANAGEMENT LLC

0.4%

MORGAN STANLEY

0.2%

BANK OF AMERICA CORP /DE/

0.2%

JPMORGAN CHASE & CO

0.1%

Jaccard similarity per fund: shared CUSIPs / (fund A + fund B − shared). Higher values indicate more similar portfolios.

Loading overlap analysis...

Position Changes This Quarter

New1Increased2Decreased3Exited2

New Positions

DMRA16.3%

+8.7M

Increased

DNTH15.4%

+400K(+19%)

ZBIO3.3%

+150K(+7%)

Decreased

COGT15.3%

-3,500,000(-39%)

ELVN5.3%

-1,855,800(-50%)

APGE1.8%

-1,750,000(-85%)

Exited

NUVL

-727,563

KINIKSA PHARMACEUTIC…

-1,319,688

Quarter-over-quarter changes compared to prior 13F filing. New = first appearance; Exited = no longer held.

Loading position changes...

Holdings

Loading holdings...