DOSSIER · 13F-HR · Q2 2026

POTOMAC FUND MANAGEMENT INC /ADV

$4.0B in tracked AUM across 109 positions as of Q2 2026.

PF
CIK 0000826000 · last filed Jun 30, 2026
Total AUM
$4.0B
as of Q2 2026
Holdings
109
positions
Whale Score
74
74
strong
Activity
no data
changes this Q
AI Analysis · Q2 2026
Comprehensive SEC 13F Analysis: Potomac Fund Management Inc.

Report Period: Q3 2025 (Ending September 30, 2025)

1. Portfolio Overview

Potomac Fund Management Inc. reported a significant expansion in assets during Q3 2025, with the total portfolio value growing by 36.9% quarter-over-quarter, rising from approximately $954 million to $1.31 billion. This growth is attributable to a combination of market appreciation and substantial capital inflows, evidenced by the high volume of new posi...

The portfolio consists of 54 holdings, displaying a highly concentrated structure with a distinct barbell strategy. The top three positions account for approximately 70% of the total portfolio value. The investment approach is characterized by a heavy reliance on leveraged and inverse exchange-traded funds (ETFs) to execute tactical views on interest rates and equity markets, rather than traditional stock selection. The firm utilizes a "core-satellite" approach where the core is comprised of duration-targeted Treasury ETFs and leveraged equity exposure, while the satellites include niche fixed-income strategies and specific thematic equity plays.

2. Key Holdings

The portfolio is dominated by three massive positions that dictate the fund's risk and return profile:

Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Quarter at a glance — Q2 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q2 2026.

#HoldingValueSharesWeight
01
IVV
ISHARES TR
$2.7B3.5M66.9%
02
XHLF
BONDBLOXX ETF TRUST
$392M7.8M9.9%
03
SPYM
SPDR SERIES TRUST
$138M1.6M3.5%
04
SGOV
ISHARES TR
$82M817K2.1%
05
SECT
NORTHERN LTS FD TR IV
$61M845K1.5%
06
09789C887
BONDBLOXX ETF TRUST
$59M1.6M1.5%
07
XBB
BONDBLOXX ETF TRUST
$55M1.3M1.4%
08
VWOB
VANGUARD WHITEHALL FDS
$30M447K0.8%
09
UUP
INVESCO DB US DLR INDEX TR
$30M1.1M0.8%
10
FALN
ISHARES TR
$30M1.1M0.8%

Filing history

2026Q2Jun 30
$4.0B 38.0%
109 positionsView →
2026Q1Mar 31
$2.9B 6.1%
105 positionsView →
2025Q4Dec 31
$2.7B 107.8%
108 positionsView →
2025Q3Sep 30
$1.3B 36.9%
54 positionsView →
2025Q2Jun 30
$954M 755.2%
41 positionsLocked
2025Q1Mar 31
$112M 83.8%
32 positionsLocked
2024Q4Dec 31
$690M
45 positionsLocked