PSIX

Power Solutions Internationa Cross-source read$45.87 0.70%
IndustrialsCUSIP 73933G202· EOD Sep 18, 2026

Among active 13F managers last quarter, 12 opened and 28 added, while 16 reduced; the largest holder to move was Point72 Asset Management, L.P. (280× the prior stake). No open-market insider trades in the last 180 days.

Tracked 13F holders
163
64 in Q2 2026 filings
13F value (tracked)
$404.5M
Smart-money readBullish
Net sellingNet buying
Funds · active managers, latest 13F
40 adding · 16 trimming
Insiders · Form 4 open-market, 180d
0 buying · 0 selling
US House · STOCK Act, 180d
0 buying · 0 selling

Funds lean in and no leg opposes.

Price & smart-money activity

$45.87 0.70%5Y +919.3%
$1.33$30.67$60.00$89.33$118.66202120222023202420252026172122022121716221021544171177320734763452744
Hover for who · click for detailEnd-of-day closing prices52w $25.44 – $115.78

Who owns PSIX?

163 tracked 13F filers · ranked by shares held

163 tracked 13F filers disclose a position in PSIX as of the latest SEC 13F filings, a combined $404.5M 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
1Point72 Asset Management, L.P.1.5M
$58.2M
280×
Added · +1.5M sh
Q2 2026
2BlackRock, Inc.819K
$31.8M
+14%
Added · +103K sh
Q2 2026
3Newtyn Management, LLC601K
$23.4M
New
+601K sh
Q2 2026
4Arrowstreet Capital, Limited Partnership466K
$28.4M
+5.2%
Added · +23K sh
Q1 2026
5Situational Awareness Partners LP432K
$26.3M
New
+432K sh
Q1 2026
6Vanguard Capital Management LLC341K
$13.2M
−0.1%
Reduced · −340 sh
Q2 2026
7Yunqi Capital Ltd339K
$13.2M
New
+339K sh
Q2 2026
8Olp Capital Management Ltd284K
$11.0M
New
+284K sh
Q2 2026
9Dimensional Fund Advisors LP283K
$17.2M
+40%
Added · +81K sh
Q1 2026
10Barclays PLC239K
$14.6M
+790%
Added · +212K sh
Q1 2026
11Busey Bank220K
$13.4M
Held
Q1 2026
12Geode Capital Management, LLC216K
$8.4M
+10%
Added · +20K sh
Q2 2026
13State Street Corp185K
$7.2M
+8.3%
Added · +14K sh
Q2 2026
14Morgan Stanley167K
$10.2M
−4.4%
Reduced · −8K sh
Q1 2026
15LPL Financial LLC156K
$9.5M
+80%
Added · +70K sh
Q1 2026
16Yiheng Capital Management, L.P.134K
$5.2M
New
+134K sh
Q2 2026
17Hel Ved Capital Management Ltd101K
$3.9M
Held
Q2 2026
18Millennium Management LLC98K
$6.0M
+3.4%
Added · +3K sh
Q1 2026
19First Trust Advisors LP86K
$5.2M
+6.2%
Added · +5K sh
Q1 2026
20Valiant Capital Management, L.P.82K
$3.2M
+18%
Added · +12K sh
Q2 2026
21Northern Trust Corp80K
$4.9M
+2.2%
Added · +2K sh
Q1 2026
22Charles Schwab Investment Management Inc75K
$4.6M
−0.3%
Reduced · −263 sh
Q1 2026
23Tidal Investments LLC72K
$2.8M
+147%
Added · +43K sh
Q2 2026
24Vanguard Portfolio Management LLC70K
$2.7M
−33%
Reduced · −35K sh
Q2 2026
25Capital Fund Management S.A.63K
$2.5M
+33%
Added · +16K sh
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 PSIX being bought or sold by institutions?

Last quarter, 12 funds opened a new position in PSIX and 28 added to an existing one, while 16 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened
12
funds took a first position
Added
28
added to an existing position
Reduced
16
reduced, still holding
Biggest moves · ranked by size of the change, positions above a floor

Funds that own PSIX also own

CompanyCo-held byTheir position there
Microsoft CorpMSFT81 funds$152.1B
Amazon.com IncAMZN80 funds$117.3B
Nvidia CorpNVDA79 funds$230.7B
Alphabet Inc-CL AGOOGL77 funds$104.5B
Micron Technology IncMU77 funds$32.4B
Apple IncAAPL75 funds$167.7B
Chevron CorpCVX75 funds$17.0B
Eli Lilly & CoLLY74 funds$47.3B
Advanced Micro DevicesAMD74 funds$35.3B
Broadcom IncAVGO73 funds$99.0B
Meta Platforms Inc-Class AMETA73 funds$61.0B
Ge Vernova IncGEV73 funds$15.6B

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

Insider activity (Form 4)

Full insider page →
Net · 180d
$0
0 open-market transactions
DateInsiderRoleActionSharesValue
Sep 11, 2025Weichai Power Co., Ltd.10% OwnerSell (S)
4 lots, same day
80K$7.5M
Sep 11, 2025He HongDirectorSell (S)2K$141K
Sep 10, 2025Weichai Power Co., Ltd.10% OwnerSell (S)
6 lots, same day
37K$3.4M
Sep 10, 2025He HongDirectorSell (S)1K$95K
Sep 9, 2025Xykis ConstantineCEOSell (S)8K$717K
Sep 9, 2025He HongDirectorSell (S)
2 lots, same day
4K$366K
Sep 8, 2025He HongDirectorSell (S)1K$89K
Aug 26, 2025Shandong Heavy Industry Group Co., Ltd.10% OwnerSell (S)
10 lots, same day
94K$7.8M
Aug 25, 2025Simpkins Frank PDirectorSell (S)10K$916K
Aug 25, 2025Li XunCFOSell (S)
4 lots, same day
8K$739K
Aug 25, 2025Weichai Power Co., Ltd.10% OwnerSell (S)
6 lots, same day
51K$4.7M
Aug 25, 2025Li XunCFOBuy (P)300$28K

One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.

Do institutions, insiders and Congress agree?

Mixed signals

Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.

SEC EDGAR 13F + Form 4 + US House STOCK Act{ }get_ticker_confluence · API & MCP

Signals by source

Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive

SourceBuyingSellingNet
13F funds
Top 100 holders by value, passive included; the hero counts active managers only
4536
Insiders
Form 4 open-market
00$0
US House
STOCK Act trades
00$0
Sector rotation
PSIX is in Industrials, which smart money is rotating INTO
+$64.9B

Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.

Institutional ownership over time

64 tracked filers in Q2 2026 filingsstill filing
093186Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
tracked filers holding their reported valueQ2 2026 filings so far: $68.0M
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.

Recent filings

15 most recent

Keep exploring

Connected entities for PSIX

Browse more

Build

Ask your agent what changed in PSIX

This stock 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/PSIX/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for PSIX.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for PSIX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.