Companies: 10,795·Total market cap: $144.5T
Idemitsu Kosan Co.,Ltd.

Idemitsu Kosan Co.,Ltd.

IDKOFOTCEnergy● Active
$6.75
$-2.00(-22.86%)
Market Cap$8.2B
P/E Ratio—
52W High$9.65
52W Low$5.53
Shares OutstandingFinancialsRevenue

Idemitsu Kosan Co.,Ltd. (IDKOF) Shares Outstanding — Overview

Basic and diluted weighted average shares, YoY change, float context, and historical trend from SEC filings and FMP.

IDKOF · shares outstanding · updated Jun 9, 2026

Key metrics

Basic Shares Outstanding · Weighted average · fiscal year
1.225B▼ -8.40% YoY Change
FY · as of Mar 31, 2026 · Reported in JPY
vs 1.337B in FY 2025
Diluted Shares Outstanding
1.225B
incl. options, RSUs, convertibles
Dilution Spread
+0.00%
Diluted vs Basic
YoY Change
-8.40%
year-over-year
Float (Free Float)
725.9M
publicly tradable shares
59.9% of total
Source: FMP /income-statement · /shares-float · SEC 10-K / 10-QUpdated: 2026-06-09

Shares Outstanding Growth Rate

3-Year CAGRdeclining
-6.3%
2023 → 2026
5-Year CAGRincreasing
+32.7%
2021 → 2026
10-Year CAGRincreasing
+22.6%
2016 → 2026
ⓘ

Negative CAGR typically indicates share buyback or retirement activity. Interpret alongside Splits and Financials tabs. Splits / Financials

Shares outstanding history

↓ Decrease — typically buyback / retirement
↑ Increase — issuance / equity compensation
Latest
* most recent reported · FMP /income-statement · weightedAverageShsOut

Annual shares outstanding by year

FY 2026Latest
Diluted Shares: 1.225B
1.225B
-8.40%
FY 2025
Diluted Shares: 1.337B
1.337B
-5.62%
FY 2024
Diluted Shares: 1.417B
1.417B
-4.68%
FY 2023
Diluted Shares: 1.486B
1.486B
+399.88%
FY 2022
Diluted Shares: 297.3M
297.3M
+0.01%
FMP /income-statement · weightedAverageShsOut · weightedAverageShsOutDilUnit: Billions (B)

Energy sector shares outstanding comparison

Shares Outstanding for similar companies or competitors in the Energy sector.

#SymbolCompanyShares (Basic)vs IDKOF
#1
Exxon Mobil CorporationXOM
Exxon Mobil Corporation
4.331B+253.7%
#2
Shell plcSHEL
Shell plc
2.945B+140.5%
#3
TotalEnergies SETTE
TotalEnergies SE
2.191B+78.9%
#4
Enbridge Inc.ENB
Enbridge Inc.
2.180B+78.0%
#5
Chevron CorporationCVX
Chevron Corporation
1.849B+51.0%
#6
ConocoPhillipsCOP
ConocoPhillips
1.252B+2.2%
#7
Idemitsu Kosan Co.,Ltd.IDKOF
Idemitsu Kosan Co.,Ltd.YOU
1.225B—

/company-screener · per-peer /income-statement · cache 86400s

Understanding Shares Outstanding

What Are Shares Outstanding? (Basic)

Idemitsu Kosan Co.,Ltd. (IDKOF) shares outstanding is the total number of issued shares held by shareholders — the basis for Basic EPS and market capitalization. As of March 31, 2026, Idemitsu Kosan Co.,Ltd. reports 1.225B basic shares outstanding (weighted average).

Basic vs. Diluted Shares Outstanding

Idemitsu Kosan Co.,Ltd.'s basic shares outstanding (1.225B) represents currently issued shares. Diluted shares outstanding (1.225B) also includes potential shares from stock options, RSUs, and convertibles. Dilution spread: +0.00%.

Shares Outstanding vs. Float (Free Float)

Idemitsu Kosan Co.,Ltd.'s float is 725.9M (59.9% of total shares outstanding) — shares freely available for public trading, excluding insider-held and restricted shares.

Float725.9M(59.9%)
Outstanding1.212B

ⓘ Float data from /shares-float reflects the most recent SEC filing period-end. The weighted average shares (from /income-statement) may differ — this is a normal reporting window difference, not a data error.

FMP /income-statement · /shares-float · SEC EDGAR · JPY

About shares outstanding & methodology

Idemitsu Kosan Co.,Ltd. (IDKOF) shares outstanding history from 2007 to 2026. Shares outstanding can be defined as the total number of shares held by all shareholders — including institutional investors, retail investors, and company insiders — assuming conversion of all convertible debt, securities, warrants, and options. This metric excludes the company's treasury shares.

Idemitsu Kosan Co.,Ltd. shares outstanding for the fiscal year ending March 31, 2026 were 1.225B, a 8.40% decline year-over-year. Idemitsu Kosan Co.,Ltd. FY 2026 shares outstanding were 1.225B, a -8.40% decline from FY 2025.

Idemitsu Kosan Co.,Ltd. is a leading company operating in the Energy sector. The company's share count trajectory — with a 10-year CAGR of +22.6% — is a key signal for investors evaluating capital return policy, EPS accretion, and long-term shareholder value creation.

Figures tie to SEC 10-K/10-Q income statement disclosures and FMP /income-statement · /shares-float where noted.
Market capSplitsEarningsFinancials (Income)Cash on handFree cash flowNet incomePrice history

Frequently asked questions

IDKOF shares outstanding · 4 questions

As of March 31, 2026, Idemitsu Kosan Co.,Ltd. (IDKOF) has approximately 1.225B basic shares outstanding and 1.225B diluted shares outstanding. This represents a -8.40% year-over-year change from FY 2025 (1.337B). Idemitsu Kosan Co.,Ltd.'s declining share count is primarily driven by its share buyback program. For the complete historical data table, see the history table above.

IDKOF shares outstandinghow many shares does IDKOF haveIDKOF basic shares 2026IDKOF diluted shares

▸ Data: FMP /income-statement · /shares-float · SEC EDGAR · weighted average basis · Idemitsu Kosan Co.,Ltd. SEC 10-K & 10-Q filings · US GAAP · Last updated: 2026-06-09