Costain (COST) Ownership - Who Owns Costain?

Q: What percentage of Costain Group PLC (GB:COST) stock is held by retail investors?

According to the latest TipRanks data, approximately 96.85% of Costain Group PLC (GB:COST) stock is held by retail investors.

Q: Who owns the most shares of Costain Group PLC (GB:COST)?

Vanguard owns the most shares of Costain Group PLC (GB:COST).

Q: What is the significance of the ownership structure for a publicly traded company?

The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.

93 Followers

Costain (COST) Ownership Overview

0.36% Insiders

0.76%

Mutual Funds

2.02% ETFs

96.85% Public Companies and

Individual Investors

The ownership structure of Costain (GB:COST) stock is a mix of institutional, retail, and individual investors. , 0.36% is owned by Insiders, and 96.85% is owned by Public Companies and Individual Investors.

The ownership structure of Costain (GB:COST) stock is a mix of institutional, retail, and individual investors. Approximately 2.78% of the company’s stock is owned by Institutional Investors, 0.36% is owned by Insiders, and 96.85% is owned by Public Companies and Individual Investors.

Recent Insider Trading Activity

Date	Name	Activity	Value
Apr 15, 2026	Helen Willis	xxxxxxxxxxxxx	£499515
Apr 01, 2026	Baroness Kate Rock	xxxxxxxxxxxxx	£18220
Dec 11, 2025	Fiona Margaret Macaulay	xxxxxxxxxxxxx	£9965
Aug 28, 2025	Baroness Kate Rock	xxxxxxxxxxxxx	£19751

Show More Insider Trading Activity >

Top Shareholders

# of Shares	Type	% Holding	Value
3,505,362	Institution	1.32%	8,763,405
1,816,036	Institution	0.68%	4,540,090
570,737	Insider	0.21%	1,426,843
559,195	Institution	0.21%	1,397,988
397,104	Institution	0.15%	992,760
371,825	Institution	0.14%	929,563
253,793	Insider	0.10%	634,483
218,509	Institution	0.08%	546,273
143,282	Institution	0.05%	358,205
125,000	Insider	0.05%	312,500

Top Mutual Fund Holders

# of Shares	Type	% Holding	Value
1,816,036	Institution	0.68%	4,540,090
78,088	Institution	0.03%	195,220
76,177	Institution	0.03%	190,443
29,754	Institution	0.01%	74,385
17,043	Institution	<0.01%	42,608
9,855	Institution	<0.01%	24,638
5,050	Institution	<0.01%	12,625
1,629	Institution	<0.01%	4,073
2	Institution	0.00%	5

Top ETF Holders

Holder	# of Shares	Type	% Holding	Value
Vanguard FTSE 250 UCITS ETF	1,752,681	Institution	0.66%	3,270,503
Van FTSE 250 Ptg.Shs GBP	1,752,681	Institution	0.66%	3,270,503
SPDR S&P International Small Cap ETF	371,825	Institution	0.14%	927,725
Dimensional International Small Cap Value ETF	218,509	Institution	0.08%	545,190
WisdomTree International SmallCap Dividend Fund	218,146	Institution	0.08%	544,287
Avantis International Equity ETF	106,026	Institution	0.04%	266,464
WisdomTree Dynamic Currency Hedged International SmallCap Equity Fund	98,404	Institution	0.04%	245,524
SPDR UK All Sh Accum.Shs GBP	52,019	Institution	0.02%	95,091
SPDR FTSE UK All Share UCITS ETF	52,019	Institution	0.02%	95,091
WisdomTree Europe SmallCap Dividend Fund	41,190	Institution	0.02%	102,771

FAQ

Who Owns Costain Group PLC (GB:COST)?

Currently, no data Available

What percentage of Costain Group PLC (GB:COST) stock is held by institutional investors?

Currently, no data Available

What percentage of Costain Group PLC (GB:COST) stock is held by retail investors?

According to the latest TipRanks data, approximately 96.85% of Costain Group PLC (GB:COST) stock is held by retail investors.

Who owns the most shares of Costain Group PLC (GB:COST)?

Vanguard owns the most shares of Costain Group PLC (GB:COST).

What is the significance of the ownership structure for a publicly traded company?

The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.