Pronto a investire in azioni?

Scopri il miglior broker per iniziare.

Quanto vuoi investire?

MTN Group Ltd.

ISIN ZAE000042164

WKN 897024

Capitalizzazione (in EUR)

18.913 Mio.

Paese

Südafrika

Settore

Telekommunikation

Rendimento da dividendo

2,59%

Panoramica

Quotazione

Description

MTN Group Ltd. ist in der Bereitstellung von Sprach-, Daten-, Fintech-, Digital-, Unternehmens-, Grosshandels- und Application Programming Interface-Diensten tätig. Das Unternehmen ist in den folgenden geografischen Segmenten tätig: Südafrika, Nigeria, Süd- und Ostafrika, West- und Zentralafrika sowie Naher Osten und Nordafrika. Das Unternehmen wurde am 23. November 1994 gegründet und hat seinen Hauptsitz in Fairland, Südafrika.

Show more Show less

Telekommunikation Andere Telekommunikationsdienste Südafrika

Chart

Financials

Key metrics

Market capitalisation, EUR	18.913 Mio.
EPS, EUR	-
P/B ratio	2,4
P/E ratio	17,3
Dividend yield	2,59%

Income statement (2025)

Revenue, EUR	11.251 Mio.
Net income, EUR	1.006 Mio.
Profit margin	8,94%

JPM Equity Premium Income Active ETFs

Upgrade your income.

Explore

Capital at risk

What ETF is MTN Group Ltd. in?

There are 160 ETFs which contain MTN Group Ltd.. All of these ETFs are listed in the table below. The ETF with the largest weighting of MTN Group Ltd. is the iShares MSCI South Africa UCITS ETF.

ETF	Weight	Investment focus	Fund size (in m EUR)
iShares FTSE All-World UCITS ETF USD (Acc)	0,02%	Equity World	34
UBS MSCI ACWI SF UCITS ETF hUSD acc	0,02%	Equity World	2,125
iShares MSCI EM UCITS ETF (Dist)	0,21%	Equity Emerging Markets	8,758
iShares Moderate Portfolio UCITS ETF EUR (Acc)	0,01%	Equity World Social/Environmental Multi-Asset Strategy	47
Amundi MSCI Emerging Markets Swap II UCITS ETF EUR Acc	0,21%	Equity Emerging Markets	893
iShares MSCI EM SRI UCITS ETF USD (Dist)	0,77%	Equity Emerging Markets Social/Environmental	470
Invesco RAFI All-World Fundamental Value UCITS ETF	0,05%	Equity World Value	282
JPMorgan All Country Research Enhanced Index Equity Active UCITS ETF CHF Hedged (acc)	0,04%	Equity World Social/Environmental	5
HSBC MSCI Emerging Markets UCITS ETF USD	0,18%	Equity Emerging Markets	3,645
iShares Moderate Portfolio UCITS ETF GBP Hedged (Acc)	0,01%	Equity World Social/Environmental Multi-Asset Strategy	29
iShares Core MSCI Emerging Markets IMI UCITS ETF	0,19%	Equity Emerging Markets	1,557
Invesco FTSE All-World UCITS ETF GBP PfHdg Dist	0,00%	Equity World	32
iShares MSCI EM UCITS ETF (Acc)	0,21%	Equity Emerging Markets	8,888
BNP Paribas Easy MSCI Emerging ex China UCITS ETF Acc	0,23%	Equity Emerging Markets	64
Xtrackers MSCI Emerging Markets UCITS ETF 1C	0,21%	Equity Emerging Markets	12,095
Amundi Prime All Country World UCITS ETF Acc	0,02%	Equity World	2,950
UBS MSCI EM ex China Socially Responsible UCITS ETF USD acc	1,05%	Equity Emerging Markets Social/Environmental Climate Change	16
UBS MSCI ACWI SF UCITS ETF USD Ukdis	0,02%	Equity World	282
BNP Paribas Easy MSCI Emerging ex China UCITS ETF EUR Acc	0,23%	Equity Emerging Markets	1
iShares MSCI South Africa UCITS ETF	6,66%	Equity South Africa	210
iShares MSCI All Country World UCITS ETF USD (Dist)	0,02%	Equity World	31
UBS ETF (LU) MSCI Emerging Markets UCITS ETF (USD) A-UKdis	0,17%	Equity Emerging Markets	101
JPMorgan Strategic Allocation Moderate Active UCITS ETF EUR (acc)	0,03%	Equity World Social/Environmental Multi-Asset Strategy	7
State Street SPDR MSCI All Country World Investable Market UCITS ETF USD Unhedged (Acc)	0,01%	Equity World	7,481
Xtrackers MSCI AC World Screened UCITS ETF 2C - EUR Hedged	0,02%	Equity World Social/Environmental	85
Xtrackers MSCI Emerging Markets ex China UCITS ETF 1C	0,27%	Equity Emerging Markets	147
ODDO BHF Global Balanced Allocation Active UCITS ETF AAA Acc	0,01%	Equity World Multi-Asset Strategy	0
UBS MSCI ACWI Socially Responsible UCITS ETF hCHF dis	0,09%	Equity World Social/Environmental Climate Change	18
Franklin FTSE Emerging ex China UCITS ETF USD Capitalisation	0,33%	Equity Emerging Markets	6
Vanguard FTSE All-World Ex-U.S. UCITS ETF USD Acc	0,06%	Equity World	62
HSBC Emerging Market Screened Equity UCITS ETF USD	0,02%	Equity Emerging Markets Social/Environmental Climate Change	165
iShares MSCI EM IMI Screened UCITS ETF USD (Dist)	0,20%	Equity Emerging Markets Social/Environmental	1,215
State Street SPDR MSCI All Country World Investable Market UCITS ETF USD Unhedged (Dist)	0,01%	Equity World	221
Vanguard FTSE Global All-Cap UCITS ETF USD Dist	0,02%	Equity World	39
UBS MSCI ACWI SF UCITS ETF USD Hedged Ukdis	0,02%	Equity World	49
UBS MSCI ACWI Socially Responsible UCITS ETF USD acc	0,09%	Equity World Social/Environmental Climate Change	721
Amundi Prime All Country World UCITS ETF GBP Hedged Dist	0,02%	Equity World	28
UBS MSCI ACWI Universal UCITS ETF hEUR acc	0,02%	Equity World Social/Environmental	594
UBS MSCI ACWI SF UCITS ETF hEUR acc	0,02%	Equity World	1,649
Amundi MSCI Emerging Ex China ESG Selection UCITS ETF Acc	0,53%	Equity Emerging Markets Social/Environmental	901
UBS Core MSCI EM UCITS ETF USD dis	0,17%	Equity Emerging Markets	2,764
Amundi MSCI All Country World UCITS ETF EUR Acc	0,02%	Equity World	2,382
Xtrackers FTSE All-World ex US UCITS ETF 1C	0,06%	Equity World	46
State Street SPDR MSCI All Country World UCITS ETF USD Hedged (Acc)	0,02%	Equity World	95
Vanguard FTSE All-World Ex-U.S. UCITS ETF USD Dist	0,06%	Equity World	8
State Street SPDR MSCI Emerging Markets UCITS ETF USD	0,19%	Equity Emerging Markets	1,928
UBS MSCI ACWI SF UCITS ETF CHF Hedged Ukdis	0,02%	Equity World	87
Invesco FTSE All-World UCITS ETF EUR PfHdg Acc	0,00%	Equity World	63
Xtrackers MSCI AC World Screened UCITS ETF 1C	0,02%	Equity World Social/Environmental	6,124
Fidelity Emerging Markets Equity Research Enhanced UCITS ETF ACC-USD	0,06%	Equity Emerging Markets Social/Environmental	2,838
JPMorgan Global Emerging Markets Research Enhanced Index Equity Active UCITS ETF USD (acc)	0,33%	Equity Emerging Markets Social/Environmental	2,164
iShares MSCI All Country World SRI UCITS ETF USD (Acc)	0,20%	Equity World Social/Environmental	98
UBS MSCI ACWI Socially Responsible UCITS ETF USD dis	0,09%	Equity World Social/Environmental Climate Change	44
Invesco FTSE All-World UCITS ETF	0,00%	Equity World	3,963
JPMorgan All Country Research Enhanced Index Equity Paris Aligned Active UCITS ETF USD (acc)	0,02%	Equity World Social/Environmental Climate Change	2
iShares Conservative Portfolio UCITS ETF USD Hedged (Acc)	0,01%	Equity World Social/Environmental Multi-Asset Strategy	1
iShares Core MSCI Emerging Markets IMI UCITS ETF (Acc)	0,19%	Equity Emerging Markets	38,331
BNP Paribas Easy MSCI Emerging UCITS ETF Acc	0,21%	Equity Emerging Markets	63
UBS MSCI ACWI SF UCITS ETF USD acc	0,02%	Equity World	3,812
UBS MSCI ACWI Universal UCITS ETF USD dis	0,02%	Equity World Social/Environmental	2,181
WisdomTree Megatrends UCITS ETF USD	0,03%	Equity World Social/Environmental Innovation	57
BNP Paribas Easy MSCI ACWI SRI S-Series PAB 5% Capped UCITS ETF EUR Acc	0,02%	Equity World Social/Environmental	18
Amundi Core MSCI Emerging Markets UCITS ETF Acc	0,20%	Equity Emerging Markets	4,166
JPMorgan All Country Research Enhanced Index Equity Active UCITS ETF EUR (acc)	0,04%	Equity World Social/Environmental	86
ODDO BHF Global Balanced Allocation Active UCITS ETF C	0,01%	Equity World Multi-Asset Strategy	10
Xtrackers Emerging Markets Net Zero Pathway Paris Aligned UCITS ETF	0,20%	Equity Emerging Markets Social/Environmental Climate Change	15
UBS MSCI ACWI Universal UCITS ETF hGBP acc	0,02%	Equity World Social/Environmental	255
UBS MSCI ACWI Socially Responsible UCITS ETF hEUR acc	0,09%	Equity World Social/Environmental Climate Change	653
iShares MSCI All Country World Screened UCITS ETF USD (Acc)	0,03%	Equity World Social/Environmental	2,869
iShares MSCI EM IMI Screened UCITS ETF USD (Acc)	0,20%	Equity Emerging Markets Social/Environmental	5,566
Vanguard FTSE All-World High Dividend Yield UCITS ETF Distributing	0,05%	Equity World Dividend	9,879
iShares MSCI EM CTB Enhanced ESG UCITS ETF USD (Dist)	0,21%	Equity Emerging Markets Social/Environmental	1,036
iShares Emerging Markets Equity Enhanced Active UCITS ETF (Dist)	0,19%	Equity Emerging Markets Social/Environmental	147
UBS MSCI ACWI Universal UCITS ETF hJPY acc	0,02%	Equity World Social/Environmental	121
Amundi MSCI Emerging Markets Swap UCITS ETF USD Acc	0,21%	Equity Emerging Markets	1,424
Amundi MSCI Emerging Markets Swap II UCITS ETF USD Acc	0,21%	Equity Emerging Markets	44
iShares MSCI EM CTB Enhanced ESG UCITS ETF USD (Acc)	0,21%	Equity Emerging Markets Social/Environmental	7,693
UBS MSCI EM Socially Responsible UCITS ETF USD acc	0,76%	Equity Emerging Markets Social/Environmental Climate Change	731
ODDO BHF Global Equity Active UCITS ETF Acc - CGP	0,01%	Equity World Social/Environmental	0
iShares Refinitiv Inclusion and Diversity UCITS ETF USD (Acc)	1,50%	Equity World Social/Environmental	75
Amundi Core MSCI Emerging Markets UCITS ETF EUR Dist	0,20%	Equity Emerging Markets	1,104
WisdomTree Emerging Markets ex-State-Owned Enterprises UCITS ETF	0,60%	Equity Emerging Markets Social/Environmental	20
Invesco MSCI Emerging Markets Universal Screened UCITS ETF Acc	0,42%	Equity Emerging Markets Social/Environmental	152
iShares MSCI EM SRI UCITS ETF	0,77%	Equity Emerging Markets Social/Environmental	2,831
UBS MSCI ACWI Socially Responsible UCITS ETF hGBP dis	0,09%	Equity World Social/Environmental Climate Change	345
Franklin FTSE Emerging Markets UCITS ETF (Acc)	0,24%	Equity Emerging Markets	9
BNP Paribas Easy MSCI ACWI SRI S-Series PAB 5% Capped UCITS ETF USD C	0,02%	Equity World Social/Environmental	60
JPMorgan Global Emerging Markets Research Enhanced Index Equity SRI Paris Aligned Active UCITS ETF USD (acc)	0,29%	Equity Emerging Markets Social/Environmental Climate Change	217
iShares Growth Portfolio UCITS ETF GBP Hedged (Acc)	0,02%	Equity World Social/Environmental Multi-Asset Strategy	31
Vanguard FTSE All-World UCITS ETF (USD) Accumulating	0,02%	Equity World	50,961
UBS MSCI ACWI SF UCITS ETF GBP Hedged Ukdis	0,02%	Equity World	518
Amundi MSCI Emerging Markets ESG Selection UCITS ETF Acc	0,43%	Equity Emerging Markets Social/Environmental	958
L&G Gerd Kommer Multifactor Equity UCITS ETF USD Distributing	0,09%	Equity World Multi-Factor Strategy	232
BNP Paribas Easy MSCI ACWI UCITS ETF EUR (Acc)	0,02%	Equity World	67
UBS ETFs (IE) MSCI ACWI SF UCITS ETF (hedged to JPY) A-acc	0,02%	Equity World	208
CT QR Series Global Equity Active UCITS ETF USD Acc	0,12%	Equity World Fundamental/Quality	181
Vanguard FTSE Global All-Cap UCITS ETF USD Acc	0,02%	Equity World	1,472
Vanguard FTSE All-World High Dividend Yield UCITS ETF Acc	0,05%	Equity World Dividend	2,990
Vanguard FTSE Emerging Markets UCITS ETF (USD) Distributing	0,20%	Equity Emerging Markets	3,125
UBS MSCI ACWI Universal UCITS ETF hCHF dis	0,02%	Equity World Social/Environmental	67
Xtrackers MSCI AC World Screened UCITS ETF 5C - USD Hedged	0,02%	Equity World Social/Environmental	1
JPMorgan Global Emerging Markets Research Enhanced Index Equity (ESG) UCITS ETF USD (dist)	0,33%	Equity Emerging Markets Social/Environmental	99
UBS MSCI ACWI Universal UCITS ETF hCHF acc	0,02%	Equity World Social/Environmental	1,305
Xtrackers MSCI Emerging Markets UCITS ETF 1D	0,21%	Equity Emerging Markets	759
iShares FTSE All-World UCITS ETF USD (Dist)	0,02%	Equity World	1
iShares MSCI All Country World UCITS ETF USD (Acc)	0,02%	Equity World	31,539
BNP Paribas Easy MSCI Emerging UCITS ETF EUR Acc	0,21%	Equity Emerging Markets	4
iShares Emerging Markets Equity Enhanced Active UCITS ETF USD (Acc)	0,19%	Equity Emerging Markets Social/Environmental	1,326
JPMorgan All Country Research Enhanced Index Equity Active UCITS ETF USD (acc)	0,04%	Equity World Social/Environmental	202
iShares MSCI Global Telecommunication Services UCITS ETF USD (Acc)	1,82%	Equity World Telecommunication	10
Xtrackers MSCI Emerging Markets Swap UCITS ETF 1C	0,21%	Equity Emerging Markets	866
UBS MSCI ACWI Socially Responsible UCITS ETF hUSD acc	0,09%	Equity World Social/Environmental Climate Change	50
State Street SPDR MSCI All Country World UCITS ETF EUR Hedged (Acc)	0,02%	Equity World	1,745
JPMorgan All Country Research Enhanced Index Equity Active UCITS ETF EUR Hedged (acc)	0,04%	Equity World Social/Environmental	28
iShares Conservative Portfolio UCITS ETF EUR (Acc)	0,01%	Equity World Social/Environmental Multi-Asset Strategy	16
UBS Core MSCI EM UCITS ETF USD acc	0,17%	Equity Emerging Markets	7,895
L&G Gerd Kommer Multifactor Equity UCITS ETF USD Accumulating	0,09%	Equity World Multi-Factor Strategy	1,425
Vanguard FTSE Emerging Markets UCITS ETF (USD) Accumulating	0,20%	Equity Emerging Markets	2,040
iShares MSCI Emerging Markets Consumer Growth UCITS ETF USD (Acc)	1,13%	Equity World Consumer Discretionary	36
Xtrackers FTSE All-World UCITS ETF 1C	0,02%	Equity World	133
Invesco FTSE All-World UCITS ETF	0,00%	Equity World	279
BNP Paribas Easy MSCI Emerging Min TE UCITS ETF	0,22%	Equity Emerging Markets Social/Environmental	1,734
iShares MSCI All Country World SRI UCITS ETF USD (Dist)	0,20%	Equity World Social/Environmental	27
Amundi MSCI All Country World UCITS ETF USD Acc	0,02%	Equity World	126
Amundi Core MSCI Emerging Markets Swap UCITS ETF Acc	0,21%	Equity Emerging Markets	5,146
UBS MSCI EM SF UCITS ETF USD acc	0,21%	Equity Emerging Markets	153
iShares Moderate Portfolio UCITS ETF USD Hedged (Acc)	0,01%	Equity World Social/Environmental Multi-Asset Strategy	6
Amundi Core MSCI Emerging Markets Swap UCITS ETF Dist	0,21%	Equity Emerging Markets	5,295
Robeco 3D EM Equity UCITS ETF USD Acc	0,60%	Equity Emerging Markets Social/Environmental	803
Invesco MSCI Emerging Markets UCITS ETF	0,21%	Equity Emerging Markets	426
Amundi Core MSCI Emerging Markets UCITS ETF USD Dist	0,20%	Equity Emerging Markets	88
iShares Growth Portfolio UCITS ETF EUR (Acc)	0,02%	Equity World Social/Environmental Multi-Asset Strategy	107
UBS MSCI ACWI SF UCITS ETF hEUR Ukdis	0,02%	Equity World	43
iShares Conservative Portfolio UCITS ETF GBP Hedged (Acc)	0,01%	Equity World Social/Environmental Multi-Asset Strategy	3
ODDO BHF Global Equity Active UCITS ETF C	0,01%	Equity World Social/Environmental	8
Amundi Prime All Country World UCITS ETF Dist	0,02%	Equity World	4,609
UBS MSCI ACWI SF UCITS ETF hCHF acc	0,02%	Equity World	1,842
Xtrackers MSCI Global Social Fairness Contributors UCITS ETF 1C	1,35%	Equity World Social/Environmental	3
iShares MSCI EM ex-China UCITS ETF USD (Dist)	0,28%	Equity Emerging Markets	1,121
JPMorgan All Country Research Enhanced Index Equity Active UCITS ETF USD (dist)	0,04%	Equity World Social/Environmental	60
Vanguard FTSE All-World UCITS ETF (USD) Distributing	0,02%	Equity World	23,395
UBS MSCI ACWI Universal UCITS ETF hUSD acc	0,02%	Equity World Social/Environmental	1,226
UBS MSCI ACWI Socially Responsible UCITS ETF hCHF acc	0,09%	Equity World Social/Environmental Climate Change	157
State Street SPDR MSCI All Country World UCITS ETF USD Unhedged (Acc)	0,02%	Equity World	16,604
iShares Growth Portfolio UCITS ETF USD Hedged (Acc)	0,02%	Equity World Social/Environmental Multi-Asset Strategy	2
Xtrackers MSCI Emerging Markets ESG UCITS ETF 1C	0,47%	Equity Emerging Markets Social/Environmental	1,344
iShares MSCI EM ex-China UCITS ETF USD (Acc)	0,28%	Equity Emerging Markets	4,751
JPMorgan Strategic Allocation Growth Active UCITS ETF EUR (acc)	0,03%	Equity World Social/Environmental Multi-Asset Strategy	6
JPMorgan Strategic Allocation Conservative Active UCITS ETF EUR (acc)	0,01%	Equity World Social/Environmental Multi-Asset Strategy	6
UBS MSCI EM ex China UCITS ETF USD acc	0,23%	Equity Emerging Markets	87
BNP Paribas Easy MSCI ACWI UCITS ETF (Acc)	0,02%	Equity World	65
Amundi MSCI Emerging Markets ESG Broad Transition UCITS ETF Acc	0,16%	Equity Emerging Markets Social/Environmental Climate Change	1,814
Invesco FTSE All-World UCITS ETF CHF PfHdg Acc	0,00%	Equity World	71
Amundi MSCI Emerging Ex China UCITS ETF Acc	0,23%	Equity Emerging Markets	4,331
Xtrackers MSCI Emerging Markets Swap UCITS ETF 1D	0,21%	Equity Emerging Markets	176
Invesco RAFI Emerging Markets Fundamental Value UCITS ETF Dist	0,31%	Equity Emerging Markets Value	88
Amundi MSCI Emerging Markets Swap UCITS ETF EUR Acc	0,21%	Equity Emerging Markets	4,136
UBS MSCI EM Socially Responsible UCITS ETF USD dis	0,76%	Equity Emerging Markets Social/Environmental Climate Change	2,267
JPMorgan Global Equity Active UCITS ETF USD (acc)	0,22%	Equity World Social/Environmental	12
L&G Emerging Markets Equity UCITS ETF USD Acc	0,19%	Equity Emerging Markets Social/Environmental	130

Savings plan offers

Here you can find information about the savings plan availability for the stock. You can use the table to compare savings plan offers for the selected savings rate.

Scopri la classifica completa dei broker

Fonte: Ricerca di justETF; al 9/2026. Le offerte sono ordinate come segue: 1. Classifica 2. Tasso di investimento 3. Numero di PAC con azioni. Il numero di PAC con azioni è arrotondato. Oltre alle commissioni addebitate dai broker online, potrebbero essere applicati costi aggiuntivi. Le commissioni indicate non includono quindi gli spread di mercato standard, le commissioni, i costi dei prodotti e le commissioni di terzi. Attenzione: non possiamo garantire che i contenuti siano completi, corretti e accurati. Fanno fede le informazioni riportate sui siti web dei broker online. Gli investimenti in titoli comportano dei rischi.
* Link di affiliazione
** Nota importante: Siamo parte del Gruppo Scalable dal 2021 e una controllata interamente di proprietà di Scalable AG. Ciò significa che siamo legati economicamente, pur mantenendo completa indipendenza editoriale. I conflitti di interesse vengono evitati: tutti i broker, compreso Scalable, vengono valutati secondo criteri oggettivi e uniformi, visibili nel nostro sistema di rating trasparente. La scelta su come e con chi investire, in ultima analisi, resta sempre tua.

Performance

Returns overview

YTD	+22.40%
1 month	+0.20%
3 months	-11.62%
6 months	+6.46%
1 year	+45.23%
3 years	+78.52%
5 years	+27.78%
Since inception (MAX)	+121.75%
2025	+81.57%
2024	-15.40%
2023	-23.66%
2022	-31.10%

Monthly returns in a heat map

Risk

Risk metrics in this section:

Volatility, annualised, measured for 1, 3 and 5 year periods. The annualised volatility reflects the degree of price fluctuations during a one year period. The higher the volatility, the more significantly the price of the asset (stock, ETF, etc.) has changed in the past. Assets with higher volatility are generally considered more risky. We calculate the volatility based on the data for the past 1, 3 and 5 years so that you can see if price fluctuations for the ETF became stronger or weaker over time.
Return per risk for 1, 3 and 5 year periods. This is the annualised (i.e. converted to a one year period) past return divided by the past annualised volatility. The metric puts the historical return of an asset in relation to its historical risk and gives you a retrospective indication of the degree of price fluctuation you had to bear with in order to obtain the return. We calculate this parameter for 1, 3 and 5 year periods to display its evolution over time.
Maximum drawdown for a period. This shows the worst possible loss an investor could have suffered during the respective period, by first buying and subsequently selling the asset at the least favourable prices. For example, if there was the following sequence of daily ETF prices: 10€, 5€, 12€, 20€, an investor would have suffered the worst loss by buying for 10€ and subsequently selling for 5€. Therefore in this case the maximum drawdown would be (5€ - 10€)/10€ = -50%.

ETF returns include dividend payments (if applicable).

Mehr anzeigen Weniger anzeigen

Risiko im Überblick

Volatilität 1 Jahr	41,01%
Volatilität 3 Jahre	39,25%
Volatilität 5 Jahre	40,83%
Rendite zu Risiko 1 Jahr	1,01
Rendite zu Risiko 3 Jahre	0,55
Rendite zu Risiko 5 Jahre	0,20
Maximum Drawdown 1 Jahr	-20,48%
Maximum Drawdown 3 Jahre	-38,05%
Maximum Drawdown 5 Jahre	-70,12%
Maximum Drawdown seit Auflage	-78,48%

Rollierende 1 Jahres-Volatilität

Interessante Artikel

Modificare le impostazioni