SPXU

Prosh Ultrapro Short S&P 500ETF$36.08 1.41%
UnclassifiedCUSIP 74349Y845· EOD Sep 15, 2026

Among active 13F managers last quarter, 5 opened and 6 added, while 2 reduced; the largest holder to move was Jump Financial, LLC (new position).

Tracked 13F holders
34
1 in Q4 2025 filings
13F value (tracked)
$50.0M
13F moves · latest Q
11 added
2 reduced

Price & smart-money activity

$36.08 1.41%5Y -89.4%
$0.50$120.82$241.14$361.47$481.79202120222023202420252026127865144671356
Hover for who · click for detailEnd-of-day closing prices52w $33.02 – $62.06

Who owns SPXU?

34 tracked 13F filers · ranked by shares held

34 tracked 13F filers disclose a position in SPXU as of the latest SEC 13F filings, a combined $50.0M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

#FundSharesPosition valueLast moveAs ofHistory
1IMC-Chicago, LLC316K
$17.9M
New
+316K sh
Q1 2026
2Susquehanna International Group, LLP124K
$7.1M
+114%
Added · +66K sh
Q1 2026
3Jane Street Group, LLC98K
$5.6M
+247%
Added · +70K sh
Q1 2026
4DRW Securities, LLC70K
$2.6M
11×
Added · +64K sh
Q2 2026
5Steward Partners Investment Advisory, LLC52K
$1.9M
New
+52K sh
Q2 2026
6Jump Financial, LLC49K
$2.8M
New
+49K sh
Q1 2026
7Tower Research Capital LLC (TRC)46K
$2.6M
+17%
Added · +7K sh
Q1 2026
8Simplex Trading, LLC45K
$2.6M
+23%
Added · +8K sh
Q1 2026
9UBS Group AG32K
$1.8M
+97%
Added · +16K sh
Q1 2026
10XTX Topco Ltd20K
$1.1M
+69%
Added · +8K sh
Q1 2026
11StoneX Group Inc.14K
$525K
+144%
Added · +8K sh
Q2 2026
12Richards, Merrill & Peterson, Inc.13K
$482K
+44%
Added · +4K sh
Q2 2026
13Tidal Investments LLC13K
$463K
New
+13K sh
Q2 2026
14Integrated Advisors Network LLC11K
$408K
New
+11K sh
Q2 2026
15Vontobel Holding Ltd.9K
$323K
New
+9K sh
Q2 2026
16Tudor Investment Corp Et Al7K
$244K
New
+7K sh
Q2 2026
17Cerity Partners LLC5K
$301K
−17%
Reduced · −1K sh
Q1 2026
18Millennium Management LLC5K
$284K
New
+5K sh
Q1 2026
19Focus Partners Wealth5K
$267K
New
+5K sh
Q1 2026
20EFG International AG3K
$122K
−31%
Reduced · −1K sh
Q2 2026
21JPMorgan Chase & Co3K
$156K
−19%
Reduced · −584 sh
Q1 2026
22Optiver Holding B.V.3K
$142K
New
+3K sh
Q1 2026
23Morgan Stanley2K
$114K
251×
Added · +2K sh
Q1 2026
24Group One Trading LLC2K
$64K
−73%
Reduced · −5K sh
Q2 2026
25Beacon Investment Advisory Services, Inc.1K
$46K
Held
Q2 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is SPXU being bought or sold by institutions?

Last quarter, 5 funds opened a new position in SPXU and 6 added to an existing one, while 2 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened
5
funds took a first position
Added
6
added to an existing position
Reduced
2
reduced, still holding
Biggest moves · ranked by size of the change, positions above a floor

Institutional ownership over time

1 tracked filers in Q4 2025 filingsstill filing
02141Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025
tracked filers holding their reported valueQ4 2025 filings so far: $497K
Each bar counts tracked filers with a position in that quarter's filings, so the newest bar excludes filers still on an earlier quarter. Arkolith's tracked universe has grown over this window; part of any long-run rise is coverage, not new buyers.

Share classes

Class13F holdersValue held
SHmc115 funds$405.8M
PSQSHORT QQQ69 funds$264.9M
ITWORUSSELL 2000 HIG36 funds$100.0M
QIDULTRASHORT QQQ36 funds$21.8M
BITUULTRA BITCON ETF33 funds$3.7M
ETHTULTRA ETHER ETF18 funds$3.4M
EETHETHER ETF13 funds$7.1M
SBITULTRASHORT BITCO11 funds$10.5M

Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.

Recent filings

0 most recent

No filings captured for this ticker in the live stream yet.

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Connected entities for SPXU

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Ask your agent what changed in SPXU

This ETF page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/SPXU/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for SPXU.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + quarter-over-quarter ownership changes + end-of-day price history + the live filing stream, joined for SPXU. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.