MSTU

T-Rex 2X Long MSTR DT ETFETF$29.63 10.91%
UnclassifiedCUSIP 26923N173· EOD Sep 15, 2026

Among active 13F managers last quarter, 11 opened and 5 added, while 1 reduced; the largest holder to move was Renaissance Technologies LLC (new position).

Tracked 13F holders
38
22 in Q2 2026 filings
13F value (tracked)
$12.4M
13F moves · latest Q
16 added
1 reduced

Price & smart-money activity

$29.63 10.91%2Y -88.4%
$14.72$579.07$1,143$1,708$2,272Sep 2024Feb 2025JulNovApr 2026Sep11112122
Hover for who · click for detailEnd-of-day closing prices52w $14.70 – $573.00

Who owns MSTU?

38 tracked 13F filers · ranked by shares held

38 tracked 13F filers disclose a position in MSTU as of the latest SEC 13F filings, a combined $12.4M 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
1Goldman Sachs Group Inc940K
$4.0M
31×
Added · +910K sh
Q1 2026
2Scientech Research LLC618K
$1.0M
New
+618K sh
Q2 2026
3Citadel Advisors LLC598K
$968K
Added
Added · +598K sh
Q2 2026
4SBI Securities Co., Ltd.495K
$801K
+437%
Added · +402K sh
Q2 2026
5Renaissance Technologies LLC378K
$1.6M
New
+378K sh
Q1 2026
6Optiver Holding B.V.358K
$1.5M
20×
Added · +340K sh
Q1 2026
7Two Sigma Securities, LLC218K
$353K
+144%
Added · +129K sh
Q2 2026
8UBS Group AG190K
$807K
+63%
Added · +73K sh
Q1 2026
9StoneX Group Inc.159K
Withheld
New
+159K sh
Q2 2026
10Creative Planning136K
$579K
+57%
Added · +49K sh
Q1 2026
11Centric Wealth Management125K
Withheld
Held
Q2 2026
12Concurrent Investment Advisors, LLC60K
$98K
New
+60K sh
Q2 2026
13Jump Financial, LLC59K
$250K
New
+59K sh
Q1 2026
14WJ Financial Advisors LLC37K
$60K
+5.7%
Added · +2K sh
Q2 2026
15Correct Capital Wealth Management20K
$33K
Held
Q2 2026
16Independent Financial Group, LLC19K
$30K
New
+19K sh
Q2 2026
17United Advisor Group, LLC17K
$28K
New
+17K sh
Q2 2026
18Sanctuary Advisors, LLC16K
$26K
New
+16K sh
Q2 2026
19Jane Street Group, LLC15K
$64K
−99%
Reduced · −1.3M sh
Q1 2026
20Summit Financial, LLC14K
$23K
New
+14K sh
Q2 2026
21Citigroup Inc13K
$57K
+262%
Added · +10K sh
Q1 2026
22Exencial Wealth Advisors, LLC12K
$53K
New
+12K sh
Q1 2026
23HUB Investment Partners, LLC11K
$17K
New
+11K sh
Q2 2026
24Apollon Wealth Management, LLC10K
$43K
New
+10K sh
Q1 2026
25Providence Capital Advisors, LLC5K
$8K
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. 2 value rows are withheld because the reported units disagree with same-security peers; share counts are unchanged.

Is MSTU being bought or sold by institutions?

Last quarter, 11 funds opened a new position in MSTU and 5 added to an existing one, while 1 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened
11
funds took a first position
Added
5
added to an existing position
Reduced
1
reduced, still holding
Biggest moves · ranked by size of the change, positions above a floor

Funds that own MSTU also own

CompanyCo-held byTheir position there
Eli Lilly & CoLLY21 funds$2.2B
Advanced Micro DevicesAMD21 funds$1.4B
Sandisk CorpSNDK21 funds$1.4B
Berkshire Hathaway Inc-CL BBRK/B21 funds$1.1B
Nvidia CorpNVDA20 funds$6.0B
Microsoft CorpMSFT20 funds$3.6B
Micron Technology IncMU20 funds$2.9B
Broadcom IncAVGO20 funds$2.7B
Meta Platforms Inc-Class AMETA20 funds$1.7B
Chevron CorpCVX20 funds$1.6B
Visa Inc-Class A SharesV20 funds$1.3B
Tesla IncTSLA20 funds$1.3B

Ranked by how many of MSTU's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in MSTU.

Institutional ownership over time

22 tracked filers in Q2 2026 filingsstill filing
01631Q4 2025Q1 2026Q2 2026
tracked filers holding their reported valueQ2 2026 filings so far: $3.4M · 2 values withheld
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
ACVFmc56 funds$39.7M
VSLUMF Closed and MF Open50 funds$449.4M
FEPImc47 funds$30.8M
MSTUthis pageT-REX 2X LONG MS38 funds$14.2M
TSPYTAPPALPHA SPY GR29 funds$40.5M
AIPIREX AI EQUITY PR23 funds$6.3M
XRPRREX OSPREY XRP21 funds$4.7M
DYFIIDX DYNAMIC FIXE18 funds$58.5M

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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Ask your agent what changed in MSTU

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/MSTU/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for MSTU.
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 MSTU. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.