⚠ Large and Sporadic PurchasesModerate threat

Cisco Systems (CSCO) — threat to the moat

Cisco's networking growth accelerated every quarter of fiscal 2026 because a few large buyers bought in lumps, which is also how it will slow.

The customers who buy routers in the largest orders also buy the least predictably. Cisco's filing says sales to the service provider and cloud market "are often characterized by large and sporadic purchases"1.

Networking revenue growth by quarter, FY2026 (%)+15%Q1+21%Q2+25%Q3+28%Q4Cisco quarterly results releases, FY2026
Accelerating every quarter.

Fiscal 2026 showed the pattern in the upward direction. Networking revenue grew 15% in the first quarter2, 21% in the second3, 25% in the third4 and 28% in the fourth5. Each quarter was carried partly by large orders from a handful of cloud and AI buyers.

The same lumpiness works downward. Networking revenue fell from $34,570 million in fiscal 2023 to $29,229 million in fiscal 20246, a drop of about 15%7.

The same pattern appears in the orders. After the third quarter Cisco raised its expected fiscal 2026 hyperscaler AI orders to $9 billion from $5 billion8, an increase of 80% in its own forecast within a single quarter9. Forecasts that move that much in three months are a sign of lumpy demand, whichever way they move.

The warning would be a quarter in which networking growth halves without a change in guidance. That is how a lump ends.

References
  1. ReportedCisco's filing says sales to the service provider and cloud market "are often characterized by large and sporadic purchases".
    Cisco Systems Form 10-K for fiscal 2026 (year ended 25 July 2026) - Item 1A risk factors, competition and legal proceedings. — FY2026 · publ. 2 September 2026 · source ↗
  2. ReportedNetworking revenue grew 15% in the first quarter, 21% in the second, 25% in the third and 28% in the fourth.
    Cisco first-quarter fiscal 2026 results release, Form 8-K exhibit 99.1. — Q1 FY2026 · publ. 12 November 2025 · source ↗
  3. ReportedNetworking revenue grew 15% in the first quarter, 21% in the second, 25% in the third and 28% in the fourth.
    Cisco second-quarter fiscal 2026 results release, Form 8-K exhibit 99.1. — Q2 FY2026 · publ. 11 February 2026 · source ↗
  4. ReportedNetworking revenue grew 15% in the first quarter, 21% in the second, 25% in the third and 28% in the fourth.
    Cisco third-quarter fiscal 2026 results release, Form 8-K exhibit 99.1. — Q3 FY2026 · publ. 13 May 2026 · source ↗
  5. ReportedNetworking revenue grew 15% in the first quarter, 21% in the second, 25% in the third and 28% in the fourth.
    Cisco fourth-quarter and fiscal 2026 results release, Form 8-K exhibit 99.1 - quarterly revenue by line and segment, margins, AI infrastructure orders and fiscal 2027 guidance - fourth-quarter and full-year results by line, segment and margin. — Q4 FY2026 · publ. 12 August 2026 · source ↗
  6. ReportedNetworking revenue fell from $34,570 million in fiscal 2023 to $29,229 million in fiscal 2024, a drop of about 15%.
    Cisco Systems Form 10-K for fiscal 2024 - the new product categories with fiscal 2022-2023 restated, segment revenue and margins, and the Splunk acquisition. — FY2024 · publ. September 2024 · source ↗
  7. Moat Explorer calcNetworking revenue fell from $34,570 million in fiscal 2023 to $29,229 million in fiscal 2024, a drop of about 15%.
    Moat Explorer calculation from Cisco's reported revenue, margins and financial statements ($ millions unless stated). Revenue growth FY2026 63,325 / 56,654 - 1 = 11.8%; increase 63,325 - 56,654 = 6,671. Networking share 34,668 / 63,325 = 54.7%; of product revenue 34,668 / 48,295 = 71.8%; networking increase 34,668 - 28,304 = 6,364, 6,364 / 6,671 = 95.4% of the revenue increase. Networking against FY2023 34,668 / 34,570 - 1 = 0.3%; FY2024 29,229 / 34,570 - 1 = -15.4% (a fall of 5,341); FY2025 28,304 / 29,229 - 1 = -3.2% (a fall of 925); FY2023 34,570 - 29,265 = +5,305. Other lines FY2026 changes: security 8,232 - 8,094 = +138 (+1.7%); collaboration 4,300 - 4,154 = +146 (+3.5%); observability 1,095 - 1,055 = +40 (+3.8%); services 15,030 - 15,046 = -16 (-0.1%). Product revenue 48,295 / 41,608 - 1 = 16.1%. Shares of FY2026 revenue: services 15,030 / 63,325 = 23.7%; security 8,232 / 63,325 = 13.0%; collaboration 4,300 / 63,325 = 6.8%; observability 1,095 / 63,325 = 1.7%. Observability shares: 581 / 51,557 = 1.1% (FY2022); 661 / 56,998 = 1.2%; 837 / 53,803 = 1.6%; 1,055 / 56,654 = 1.9%. Observability growth 661 / 581 - 1 = 13.8%; 837 / 661 - 1 = 26.6%; 1,055 / 837 - 1 = 26.0%; 1,095 / 1,055 - 1 = 3.8%; 1,095 / 581 = 1.88 times. Services growth 13,856 / 13,539 - 1 = 2.3% (FY2023); 14,550 / 13,856 - 1 = 5.0%; 15,046 / 14,550 - 1 = 3.4%; FY2016 to FY2026 15,030 / 11,993 - 1 = 25.3%. Services gross profit 10,346 / 40,860 = 25.3% of gross margin. Subscription services 13,663 / 15,030 = 90.9% of services. Non-subscription product 48,295 - 18,314 = 29,981; non-subscription services 15,030 - 13,663 = 1,367. Subscription share 31,977 / 63,325 = 50.5% (FY2026); 31,526 / 56,654 = 55.6% (FY2025); 27,380 / 53,803 = 50.9% (FY2024); subscription growth 31,977 / 31,526 - 1 = 1.4%. Security: 3,382 / 1,969 - 1 = 71.8% (FY2016 to FY2021, older basis); 8,094 / 3,859 = 2.1 times (FY2023 to FY2025); 8,232 / 3,699 = 2.2 times (FY2022 to FY2026). Collaboration 4,300 / 4,823 - 1 = -10.8% against FY2020. Segments: Americas revenue 37,799 / 33,656 - 1 = 12.3%; Americas gross margin 68.2% - 65.1% = 3.1 points (310 basis points); EMEA 16,613 / 14,824 - 1 = 12.1%; APJC 8,914 / 8,174 - 1 = 9.1%. United States revenue 34.4 / 63.3 = 54.3%; outside the United States 63.3 - 34.4 = 28.9 bn; United States growth 34.4 / 30.4 - 1 = 13.2%. AI and orders: Q3 FY2026 hyperscaler orders 5.3 - 1.3 - 2.1 = 1.9 bn; Acacia about 1,000 / 9,791 networking = 10.2%; FY2027 revenue guidance midpoint (72.2 + 73.4) / 2 = 72.8 bn, 72.8 / 63.325 - 1 = 15.0%; AI revenue target 7.5 / 72.8 = 10.3%; price increases 4.5 points / 15 = about a third; Q1 FY2027 gross margin guidance midpoint (65 + 66) / 2 = 65.5%; Q1 FY2027 operating margin guidance midpoint (35.5 + 36.5) / 2 = 36.0%. Security plus observability Q4 FY2026 2,226 + 275 = 2,501. Backlog: remaining performance obligations 46,734 / 63,325 = 73.8% of revenue; short-term 22,776 / 21,723 - 1 = 4.8%; long-term 23,958 / 21,810 - 1 = 9.8%. Purchase commitments 17,165 / 7,599 - 1 = 125.9%; 17,165 / 63,325 = 27.1% of revenue. Inventory 5,694 / 3,164 - 1 = 80.0%. Competitors named in the FY2026 10-K: 18 (Amazon Web Services, Arista, Broadcom, Ciena, CrowdStrike, Datadog, Dell, Dynatrace, Fortinet, Hewlett Packard Enterprise, Huawei, Microsoft, Nokia, Nvidia, Palo Alto Networks, RingCentral, Zoom, Zscaler). Balance sheet, cash flow and market data: Net income 13,267 / 10,180 - 1 = 30.3%; free cash flow 12,767 / 13,288 - 1 = -3.9%; capital spending 1,410 / 905 - 1 = 55.8%; capital spending 1,410 / 63,325 = 2.2% of revenue; free cash flow margin 12,767 / 63,325 = 20.2%; returned 12,659 / 12,767 = 99.2% of free cash flow. Dividends / free cash flow: 6,384 / 10,210 = 62.5% (FY2024); 6,437 / 13,288 = 48.4% (FY2025); 6,553 / 12,767 = 51.3% (FY2026). Dividends per share 1.66 / 0.72 = 2.3 times (FY2014 to FY2026). Buybacks: 117 - 76 = 41 million fewer shares than FY2024; average price 80.26 / 49.45 - 1 = 62.3%; FY2018-FY2026 17,661 + 20,577 + 2,619 + 2,902 + 7,734 + 4,271 + 5,764 + 5,995 + 6,106 = 73,629. Diluted shares 3,987 / 5,146 - 1 = -22.5%. Net income 13,267 / 8,981 - 1 = 47.7%; diluted EPS 3.33 / 1.75 - 1 = 90.3% (FY2015 to FY2026). Net debt 29,533 - 15,918 (cash and investments, about 15.9 bn) = 13,615, about 13.6 bn. Net interest 1,365 - 1,006 = +359 (FY2024); 1,001 - 1,593 = -592 (FY2025); 866 - 1,470 = -604 (FY2026). Goodwill 59,477 / 129,637 = 45.9% of total assets; Splunk goodwill 19,301 / 27,090 = 71.2% of consideration. Employees 82,400 / 90,400 - 1 = -8.8%; R&D 9,563 - 9,300 = +263; sales and marketing 11,559 - 10,966 = +593; R&D 9,563 / 63,325 = 15.1% of revenue; restructuring 693 / 63,325 = 1.1% of revenue. FY2025 net income as released about 10,500 - 10,180 as filed = about 320 (about 0.3 bn); EPS 2.61 - 2.55 = 0.06. Free cash flow yield 12,767 / 421,740 = 3.0%. Price against the 52-week high 106.97 / 130.37 - 1 = -17.9%. P/E 421,740 / 13,267 = 31.8; P/S 421,740 / 63,325 = 6.66. Further: revenue FY2023 to FY2026 63,325 / 56,998 - 1 = 11.1%; HPE and Juniper Ethernet 1.15 / 5.43 = 21.2% of Cisco Ethernet; non-GAAP EPS 4.33 / 3.81 - 1 = 13.6%; FY2026 order forecast 9 / 5 - 1 = 80%; FY2025 AI orders 2.0 / 56.654 = 3.5% of revenue; FY2026 9.3 / 63.325 = 14.7%; product subscription 18,314 / 17,783 - 1 = 3.0%; FY2018 buyback 17,661 / 80.26 = 220 million shares; 76 / 3,946 = 1.9% of shares; revenue FY2024 to FY2026 63,325 / 53,803 - 1 = 17.7%; Arista 2.30 - 2.24 = 0.06 bn; R&D 9,300 / 7,983 - 1 = 16.5% and revenue 56,654 / 53,803 - 1 = 5.3% (FY2025); R&D 9,563 / 9,300 - 1 = 2.8% (FY2026); Q1 FY2027 guidance midpoint 18.1 / 14.883 - 1 = 21.6%; FY2028 consensus P/E 106.97 / 5.62 = 19.0; cash 15.9 / 6.553 = 2.4 years of dividends; services obligations 23,298 / 46,734 = 49.9% and 23,298 / 15,030 = 1.55 years; short-term debt 10,161 / 29,533 = 34.4%; authorisation 8.1 / 6.1 = 1.3 years; product-services margin spread 68.8 - 63.2 = 5.6 points; FY2024 returns (6,384 + 5,764) / 10,210 = 119%; diluted shares 4,254 / 4,881 - 1 = -12.8% (FY2018 to FY2020); buybacks FY2018 and FY2019 17,661 + 20,577 = 38,238; AI revenue 7.5 / 3.8 = 1.97 times; FY2027 GAAP EPS guidance midpoint (4.00 + 4.06) / 2 = 4.03, 4.03 / 3.33 - 1 = 21.0%; G&A 2,761 / 2,992 - 1 = -7.7%; Q4 security 2,226 / 8,232 = 27.0% of the year - revenue-line totals, growth and orders. — FY2015-FY2027 · publ. September 2026 · source ↗
    Method: Arithmetic on figures reported in Cisco's Forms 10-K, quarterly results releases, the Q4 FY2026 call and market data; operands shown in the source line.
  8. ReportedAfter the third quarter Cisco raised its expected fiscal 2026 hyperscaler AI orders to $9 billion from $5 billion, an increase of 80% in its own forecast within a single quarter.
    Cisco third-quarter fiscal 2026 results release, Form 8-K exhibit 99.1. — Q3 FY2026 · publ. 13 May 2026 · source ↗
  9. Moat Explorer calcAfter the third quarter Cisco raised its expected fiscal 2026 hyperscaler AI orders to $9 billion from $5 billion, an increase of 80% in its own forecast within a single quarter.
    Moat Explorer calculation from Cisco's reported revenue, margins and financial statements ($ millions unless stated). Revenue growth FY2026 63,325 / 56,654 - 1 = 11.8%; increase 63,325 - 56,654 = 6,671. Networking share 34,668 / 63,325 = 54.7%; of product revenue 34,668 / 48,295 = 71.8%; networking increase 34,668 - 28,304 = 6,364, 6,364 / 6,671 = 95.4% of the revenue increase. Networking against FY2023 34,668 / 34,570 - 1 = 0.3%; FY2024 29,229 / 34,570 - 1 = -15.4% (a fall of 5,341); FY2025 28,304 / 29,229 - 1 = -3.2% (a fall of 925); FY2023 34,570 - 29,265 = +5,305. Other lines FY2026 changes: security 8,232 - 8,094 = +138 (+1.7%); collaboration 4,300 - 4,154 = +146 (+3.5%); observability 1,095 - 1,055 = +40 (+3.8%); services 15,030 - 15,046 = -16 (-0.1%). Product revenue 48,295 / 41,608 - 1 = 16.1%. Shares of FY2026 revenue: services 15,030 / 63,325 = 23.7%; security 8,232 / 63,325 = 13.0%; collaboration 4,300 / 63,325 = 6.8%; observability 1,095 / 63,325 = 1.7%. Observability shares: 581 / 51,557 = 1.1% (FY2022); 661 / 56,998 = 1.2%; 837 / 53,803 = 1.6%; 1,055 / 56,654 = 1.9%. Observability growth 661 / 581 - 1 = 13.8%; 837 / 661 - 1 = 26.6%; 1,055 / 837 - 1 = 26.0%; 1,095 / 1,055 - 1 = 3.8%; 1,095 / 581 = 1.88 times. Services growth 13,856 / 13,539 - 1 = 2.3% (FY2023); 14,550 / 13,856 - 1 = 5.0%; 15,046 / 14,550 - 1 = 3.4%; FY2016 to FY2026 15,030 / 11,993 - 1 = 25.3%. Services gross profit 10,346 / 40,860 = 25.3% of gross margin. Subscription services 13,663 / 15,030 = 90.9% of services. Non-subscription product 48,295 - 18,314 = 29,981; non-subscription services 15,030 - 13,663 = 1,367. Subscription share 31,977 / 63,325 = 50.5% (FY2026); 31,526 / 56,654 = 55.6% (FY2025); 27,380 / 53,803 = 50.9% (FY2024); subscription growth 31,977 / 31,526 - 1 = 1.4%. Security: 3,382 / 1,969 - 1 = 71.8% (FY2016 to FY2021, older basis); 8,094 / 3,859 = 2.1 times (FY2023 to FY2025); 8,232 / 3,699 = 2.2 times (FY2022 to FY2026). Collaboration 4,300 / 4,823 - 1 = -10.8% against FY2020. Segments: Americas revenue 37,799 / 33,656 - 1 = 12.3%; Americas gross margin 68.2% - 65.1% = 3.1 points (310 basis points); EMEA 16,613 / 14,824 - 1 = 12.1%; APJC 8,914 / 8,174 - 1 = 9.1%. United States revenue 34.4 / 63.3 = 54.3%; outside the United States 63.3 - 34.4 = 28.9 bn; United States growth 34.4 / 30.4 - 1 = 13.2%. AI and orders: Q3 FY2026 hyperscaler orders 5.3 - 1.3 - 2.1 = 1.9 bn; Acacia about 1,000 / 9,791 networking = 10.2%; FY2027 revenue guidance midpoint (72.2 + 73.4) / 2 = 72.8 bn, 72.8 / 63.325 - 1 = 15.0%; AI revenue target 7.5 / 72.8 = 10.3%; price increases 4.5 points / 15 = about a third; Q1 FY2027 gross margin guidance midpoint (65 + 66) / 2 = 65.5%; Q1 FY2027 operating margin guidance midpoint (35.5 + 36.5) / 2 = 36.0%. Security plus observability Q4 FY2026 2,226 + 275 = 2,501. Backlog: remaining performance obligations 46,734 / 63,325 = 73.8% of revenue; short-term 22,776 / 21,723 - 1 = 4.8%; long-term 23,958 / 21,810 - 1 = 9.8%. Purchase commitments 17,165 / 7,599 - 1 = 125.9%; 17,165 / 63,325 = 27.1% of revenue. Inventory 5,694 / 3,164 - 1 = 80.0%. Competitors named in the FY2026 10-K: 18 (Amazon Web Services, Arista, Broadcom, Ciena, CrowdStrike, Datadog, Dell, Dynatrace, Fortinet, Hewlett Packard Enterprise, Huawei, Microsoft, Nokia, Nvidia, Palo Alto Networks, RingCentral, Zoom, Zscaler). Balance sheet, cash flow and market data: Net income 13,267 / 10,180 - 1 = 30.3%; free cash flow 12,767 / 13,288 - 1 = -3.9%; capital spending 1,410 / 905 - 1 = 55.8%; capital spending 1,410 / 63,325 = 2.2% of revenue; free cash flow margin 12,767 / 63,325 = 20.2%; returned 12,659 / 12,767 = 99.2% of free cash flow. Dividends / free cash flow: 6,384 / 10,210 = 62.5% (FY2024); 6,437 / 13,288 = 48.4% (FY2025); 6,553 / 12,767 = 51.3% (FY2026). Dividends per share 1.66 / 0.72 = 2.3 times (FY2014 to FY2026). Buybacks: 117 - 76 = 41 million fewer shares than FY2024; average price 80.26 / 49.45 - 1 = 62.3%; FY2018-FY2026 17,661 + 20,577 + 2,619 + 2,902 + 7,734 + 4,271 + 5,764 + 5,995 + 6,106 = 73,629. Diluted shares 3,987 / 5,146 - 1 = -22.5%. Net income 13,267 / 8,981 - 1 = 47.7%; diluted EPS 3.33 / 1.75 - 1 = 90.3% (FY2015 to FY2026). Net debt 29,533 - 15,918 (cash and investments, about 15.9 bn) = 13,615, about 13.6 bn. Net interest 1,365 - 1,006 = +359 (FY2024); 1,001 - 1,593 = -592 (FY2025); 866 - 1,470 = -604 (FY2026). Goodwill 59,477 / 129,637 = 45.9% of total assets; Splunk goodwill 19,301 / 27,090 = 71.2% of consideration. Employees 82,400 / 90,400 - 1 = -8.8%; R&D 9,563 - 9,300 = +263; sales and marketing 11,559 - 10,966 = +593; R&D 9,563 / 63,325 = 15.1% of revenue; restructuring 693 / 63,325 = 1.1% of revenue. FY2025 net income as released about 10,500 - 10,180 as filed = about 320 (about 0.3 bn); EPS 2.61 - 2.55 = 0.06. Free cash flow yield 12,767 / 421,740 = 3.0%. Price against the 52-week high 106.97 / 130.37 - 1 = -17.9%. P/E 421,740 / 13,267 = 31.8; P/S 421,740 / 63,325 = 6.66. Further: revenue FY2023 to FY2026 63,325 / 56,998 - 1 = 11.1%; HPE and Juniper Ethernet 1.15 / 5.43 = 21.2% of Cisco Ethernet; non-GAAP EPS 4.33 / 3.81 - 1 = 13.6%; FY2026 order forecast 9 / 5 - 1 = 80%; FY2025 AI orders 2.0 / 56.654 = 3.5% of revenue; FY2026 9.3 / 63.325 = 14.7%; product subscription 18,314 / 17,783 - 1 = 3.0%; FY2018 buyback 17,661 / 80.26 = 220 million shares; 76 / 3,946 = 1.9% of shares; revenue FY2024 to FY2026 63,325 / 53,803 - 1 = 17.7%; Arista 2.30 - 2.24 = 0.06 bn; R&D 9,300 / 7,983 - 1 = 16.5% and revenue 56,654 / 53,803 - 1 = 5.3% (FY2025); R&D 9,563 / 9,300 - 1 = 2.8% (FY2026); Q1 FY2027 guidance midpoint 18.1 / 14.883 - 1 = 21.6%; FY2028 consensus P/E 106.97 / 5.62 = 19.0; cash 15.9 / 6.553 = 2.4 years of dividends; services obligations 23,298 / 46,734 = 49.9% and 23,298 / 15,030 = 1.55 years; short-term debt 10,161 / 29,533 = 34.4%; authorisation 8.1 / 6.1 = 1.3 years; product-services margin spread 68.8 - 63.2 = 5.6 points; FY2024 returns (6,384 + 5,764) / 10,210 = 119%; diluted shares 4,254 / 4,881 - 1 = -12.8% (FY2018 to FY2020); buybacks FY2018 and FY2019 17,661 + 20,577 = 38,238; AI revenue 7.5 / 3.8 = 1.97 times; FY2027 GAAP EPS guidance midpoint (4.00 + 4.06) / 2 = 4.03, 4.03 / 3.33 - 1 = 21.0%; G&A 2,761 / 2,992 - 1 = -7.7%; Q4 security 2,226 / 8,232 = 27.0% of the year - revenue-line totals, growth and orders. — FY2015-FY2027 · publ. September 2026 · source ↗
    Method: Arithmetic on figures reported in Cisco's Forms 10-K, quarterly results releases, the Q4 FY2026 call and market data; operands shown in the source line.
Sources
Generated September 25, 2026