0000819118
fmr:C000174185Member
2025-11-30
2026-05-31
0000819118
fmr:C000174185Member
2026-05-31
0000819118
fmr:C000174185Member
oef:InformationTechnologySectorMember
2026-05-31
0000819118
fmr:C000174185Member
oef:CommunicationsSectorMember
2026-05-31
0000819118
fmr:C000174185Member
oef:ConsumerDiscretionarySectorMember
2026-05-31
0000819118
fmr:C000174185Member
us-gaap:HealthcareSectorMember
2026-05-31
0000819118
fmr:C000174185Member
oef:ConsumerStaplesSectorMember
2026-05-31
0000819118
fmr:C000174185Member
oef:IndustrialSectorMember
2026-05-31
0000819118
fmr:C000174185Member
fmr:MSFinancialsSectorMember
2026-05-31
0000819118
fmr:C000174185Member
oef:MaterialsSectorMember
2026-05-31
0000819118
fmr:C000174185Member
oef:UtilitiesSectorMember
2026-05-31
0000819118
fmr:C000174185Member
us-gaap:RealEstateSectorMember
2026-05-31
0000819118
fmr:C000174185Member
us-gaap:EnergySectorMember
2026-05-31
0000819118
fmr:AACommonStocksMember
fmr:C000174185Member
2026-05-31
0000819118
fmr:AAPreferredStocksMember
fmr:C000174185Member
2026-05-31
0000819118
fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
fmr:C000174185Member
2026-05-31
0000819118
fmr:C000174185Member
country:US
2026-05-31
0000819118
fmr:C000174185Member
country:NL
2026-05-31
0000819118
fmr:C000174185Member
country:CA
2026-05-31
0000819118
fmr:C000174185Member
country:IL
2026-05-31
0000819118
fmr:C000174185Member
country:CN
2026-05-31
0000819118
fmr:C000174185Member
country:BR
2026-05-31
0000819118
fmr:C000174185Member
country:GB
2026-05-31
0000819118
fmr:C000174185Member
country:CH
2026-05-31
0000819118
fmr:C000174185Member
country:HK
2026-05-31
0000819118
fmr:C000174185Member
fmr:OtherMember
2026-05-31
0000819118
fmr:C000174185Member
fmr:TH0Member
2026-05-31
0000819118
fmr:C000174185Member
fmr:TH1Member
2026-05-31
0000819118
fmr:C000174185Member
fmr:TH2Member
2026-05-31
0000819118
fmr:C000174185Member
fmr:TH3Member
2026-05-31
0000819118
fmr:C000174185Member
fmr:TH4Member
2026-05-31
0000819118
fmr:C000174185Member
fmr:TH5Member
2026-05-31
0000819118
fmr:C000174185Member
fmr:TH6Member
2026-05-31
0000819118
fmr:C000174185Member
fmr:TH7Member
2026-05-31
0000819118
fmr:C000174185Member
fmr:TH8Member
2026-05-31
0000819118
fmr:C000174185Member
fmr:TH9Member
2026-05-31
0000819118
2025-11-30
2026-05-31
iso4217:USD
pure
shares
N-CSRS
false
0000819118
N-1A
Fidelity Concord Street Trust
2026-05-31
Fidelity® Nasdaq Composite Index® Fund
Fidelity® Nasdaq Composite Index® Fund
FNCMX
This semi-annual shareholder report contains information about Fidelity® Nasdaq Composite Index® Fund for the period December 1, 2025 to May 31, 2026.
semi-annual shareholder report
You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
fundresearch.fidelity.com/prospectus/sec
1-800-544-8544
fidfunddocuments@fidelity.com
<span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;">What were your Fund costs for the last six months?</span>
<div style="text-align:left;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">(based on hypothetical $10,000 investment)</span></div>
<div style="text-align:left;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"> </span></div>
<span style="line-height:12px;"> </span><div style="text-align:left;text-align-last:auto;"></div>
<div style="text-align:left;text-align-last:auto;"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"><tr><td style="width:51%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"><div style="text-align:left;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"> </span></div>
</td>
<td style="width:21%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"><div style="text-align:center;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">Costs of a $10,000 investment</span></div>
</td>
<td style="width:27%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"><div style="text-align:center;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">Costs paid as a percentage of a $10,000 investment </span></div>
</td>
<td style="width:1%; " valign="top"><span style="line-height:12px;"> </span><div style="text-align:left;text-align-last:auto;"></div>
</td>
</tr>
<tr><td style="width:51%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"><div style="text-align:left;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Nasdaq Composite Index® Fund</span><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"> </span></div>
</td>
<td style="width:21%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"><div style="text-align:center;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">$</span><span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"> </span>16<span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"> </span></div>
</td>
<td style="width:27%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"><div style="text-align:center;text-align-last:auto;">0.29<span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">%</span></div>
</td>
<td style="width:1%; " valign="top"><span style="line-height:12px;"> </span><div style="text-align:left;text-align-last:auto;"></div>
</td>
</tr>
</table>
</div>
<div style="text-align:left;text-align-last:auto;"></div>
16
0.0029
<span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;">Key Fund Statistics</span>
<div style="text-align:left;text-align-last:auto;"></div>
<div style="text-align:left;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">(as of May 31, 2026)</span></div>
<div><span style="font-size:11px;"> </span></div><div style="text-align:left;text-align-last:auto;"></div>
<div style="text-align:right;text-align-last:auto;"><table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"><tr><td style="width:63%; " valign="top"><div style="text-align:left;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;">KEY FACTS</span><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"> </span></div>
</td>
<td style="width:32%; " valign="top"><span style="line-height:12px;"> </span><div style="text-align:left;text-align-last:auto;"></div>
</td>
<td style="width:5%; " valign="top"><span style="line-height:12px;"> </span><div style="text-align:left;text-align-last:auto;"></div>
</td>
</tr>
<tr><td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"><div style="text-align:left;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">Fund Size</span></div>
</td>
<td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"><div style="text-align:right;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">$</span>27,928,808,575</div>
<div style="text-align:right;text-align-last:auto;"></div>
</td>
<td style="width:5%; " valign="top"><span style="line-height:11px;"> </span><div style="text-align:left;text-align-last:auto;"></div>
</td>
</tr>
<tr><td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"><div style="text-align:left;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">Number of Holdings</span></div>
</td>
<td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"><div style="text-align:right;text-align-last:auto;">2,983</div>
<div style="text-align:right;text-align-last:auto;"></div>
</td>
<td style="width:5%; " valign="top"><span style="line-height:11px;"> </span><div style="text-align:left;text-align-last:auto;"></div>
</td>
</tr>
<tr><td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"><div style="text-align:left;text-align-last:auto;"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">Portfolio Turnover</span></div>
</td>
<td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"><div style="text-align:right;text-align-last:auto;">7<span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">%</span></div>
<div style="text-align:right;text-align-last:auto;"></div>
</td>
<td style="width:5%; " valign="top"><span style="line-height:11px;"> </span><div style="text-align:left;text-align-last:auto;"></div>
</td>
</tr>
</table>
</div>
<div style="text-align:left;text-align-last:auto;"></div>
27928808575
2983
0.07
MARKET SECTORS
(% of Fund's net assets)
Information Technology
54.4
Communication Services
14.7
Consumer Discretionary
12.5
Health Care
4.6
Consumer Staples
4.4
Industrials
3.3
Financials
2.9
Materials
0.9
Utilities
0.8
Real Estate
0.5
Energy
0.5
Common Stocks
99.5
Preferred Stocks
0.0
Short-Term Investments and Net Other Assets (Liabilities)
0.5
ASSET ALLOCATION (% of Fund's net assets)
Common Stocks - 99.5
Preferred Stocks - 0.0
Short-Term Investments and Net Other Assets (Liabilities) - 0.5
United States
97.1
Netherlands
0.8
Canada
0.7
Israel
0.4
China
0.3
Brazil
0.2
United Kingdom
0.1
Switzerland
0.1
Hong Kong
0.1
Others
0.2
GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
United States - 97.1
Netherlands - 0.8
Canada - 0.7
Israel - 0.4
China - 0.3
Brazil - 0.2
United Kingdom - 0.1
Switzerland - 0.1
Hong Kong - 0.1
Others - 0.2
0.544
0.147
0.125
0.046
0.044
0.033
0.029
0.009
0.008
0.005
0.005
0.995
0.000
0.005
0.971
0.008
0.007
0.004
0.003
0.002
0.001
0.001
0.001
0.002
TOP HOLDINGS(% of Fund's net assets)
NVIDIA Corp
11.3
Apple Inc
10.0
Microsoft Corp
7.4
Amazon.com Inc
6.3
Alphabet Inc Class A
4.9
Broadcom Inc
4.7
Alphabet Inc Class C
4.4
Tesla Inc
3.6
Meta Platforms Inc Class A
3.0
Micron Technology Inc
2.5
58.1
0.113
0.100
0.074
0.063
0.049
0.047
0.044
0.036
0.030
0.025