FSS · Federal Signal Corp /De/ · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding FSS
All superinvestors →Holder Concentration
Across 474 13F filersWho Holds FSS
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 472 filers, like-for-like change +3.0%; actively managed books +3.1%; index-like books +2.9%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 40.9% | 267 | -0.2% |
| Exempt adviser | 0.1% | 3 | -48.2% |
| Adviser | 10.7% | 16 | -5.5% |
| Bank | 9.1% | 21 | +12.8% |
| Insurer | 0.7% | 2 | +0.4% |
| Broker-dealer | 0.1% | 1 | +26.0% |
| Registered fund | 0.0% | 1 | new |
| Benefit plan | 0.4% | 6 | -6.9% |
| Non-US | 3.0% | 11 | +24.7% |
| Holding company | 23.1% | 9 | +3.4% |
| Unknown | 11.9% | 135 | +15.0% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 36.2% | 44 | +2.9% |
| Systematic-like | 1.5% | 25 | -39.2% |
| Concentrated | 0.9% | 61 | -19.3% |
| Diversified active | 61.5% | 342 | +5.3% |
| Unknown | 0.0% | 0 | -100.0% |
| Not measured | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 57.3% | 287 | +4.0% |
| Medium turnover | 25.0% | 108 | +5.3% |
| High turnover | 2.9% | 45 | -7.3% |
| Unknown | 14.8% | 32 | -2.6% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 14.0% | 51 | -1.9% |
| Medium horizon | 19.9% | 75 | +9.6% |
| Long horizon | 61.5% | 325 | +1.8% |
| Unknown | 4.6% | 21 | +9.3% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 2.6% | 107 | +3.3% |
| $1B to $10B | 8.7% | 148 | +2.8% |
| $10B to $100B | 17.6% | 140 | -1.4% |
| $100B or more | 71.1% | 77 | +4.2% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 5.2% | 143 | +20.4% |
| Pooled investment vehicles | 3.1% | 32 | -14.4% |
| Registered funds and BDCs | 22.0% | 35 | +0.6% |
| Pension and profit sharing plans | 0.2% | 5 | +9.7% |
| Insurance companies | 0.1% | 3 | +9.1% |
| Charitable organizations | 0.0% | 2 | -94.6% |
| Governments and sovereign funds | 1.6% | 8 | -11.0% |
| Corporations | 0.3% | 2 | -6.3% |
| Other investment advisers | 0.4% | 6 | +30.8% |
| Other | 0.6% | 3 | +21.2% |
| Diversified | 7.4% | 28 | -7.6% |
| Unknown | 59.1% | 205 | +5.5% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 8.5% | 52 | -15.6% |
| Private equity funds | 1.3% | 15 | +70.0% |
| Venture capital funds | 0.0% | 2 | -26.4% |
| Real estate funds | 0.0% | 10 | +60.3% |
| Liquidity funds | 0.0% | 1 | 0.0% |
| Securitized asset funds | 0.2% | 1 | -14.0% |
| Other private funds | 9.5% | 27 | +3.3% |
| Mixed private funds | 0.1% | 1 | +9.3% |
| Private funds, type not stated | 0.2% | 5 | -72.4% |
| No private funds | 21.2% | 156 | +4.9% |
| Unknown | 59.0% | 202 | +5.6% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 87.9% | 399 | +1.3% |
| Outside the US | 12.1% | 73 | +19.2% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 6 holders with no observed 2026-03-31 13F and 6 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
472 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 32.0% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies FSS's active holders also own, quarter ended Jun 30, 2026Shareholder Targets
13F filers that own its peers but not FSS, quarter ended Jun 30, 2026Found through its holder-overlap peers: SPXC, NPO, STVN, KAI, PNTG, BCPC, MOD, OSIS, BMI, WLDN, CWST, VCEL, ROAD, UFPT, CTS, LMAT, MEDP, HQY, HLI, BWMN. 1,269 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Capital International Investors Adviser, Diversified active | $1,372,870,364 6 held | SPXC, NPO, CWST |
| 2 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC Registered adviser, Diversified active | $902,484,194 6 held | KAI, HLI, ROAD |
| 3 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $769,126,791 14 held | MOD, CWST, HLI |
| 4 | Clearbridge Investments, LLC Registered adviser, Diversified active | $720,414,427 9 held | MEDP, CWST, HQY |
| 5 | EARNEST PARTNERS LLC Registered adviser, Diversified active | $684,125,382 5 held | HLI, SPXC, CWST |
| 6 | GENEVA CAPITAL MANAGEMENT LLC Registered adviser, Diversified active | $673,483,745 8 held | ROAD, BCPC, HQY |
| 7 | Artisan Partners Limited Partnership Registered adviser, Diversified active | $494,024,483 4 held | MOD, SPXC, STVN |
| 8 | BAMCO INC /NY/ Registered adviser, Concentrated | $473,665,815 5 held | NPO, HLI, CWST |
| 9 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Registered adviser, Diversified active | $467,989,236 6 held | HQY, VCEL, OSIS |
| 10 | FULLER & THALER ASSET MANAGEMENT, INC. Registered adviser, Diversified active | $420,288,599 2 held | MOD, MEDP |
Fund Ownership of FSS by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 29.54% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 4.89% | 2,982,767 |
| Index ETFs | 24.66% | 15,050,950 |
| Active ETFs | 1.75% | 1,069,173 |
| Active funds | 25.01% | 15,269,227 |
| Unclassified | 0.42% | 255,901 |
| All registered funds | 56.73% | 34,628,018 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $1,236,003,891 | 15.50% | 9,619,456 | Shares | 2026-08-07 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $449,072,935 | 5.63% | 3,495,003 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $340,452,757 | 4.27% | 2,649,644 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $314,379,052 | 3.94% | 2,446,720 | Shares | 2026-09-22 | |
| Mega Capital World Investors Adviser | $288,430,497 | 3.62% | 2,244,770 | Shares | 2026-08-12 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $250,951,505 | 3.15% | 1,953,082 | Shares | 2026-08-12 | |
| Mega FMR LLC Holding company | $191,722,240 | 2.40% | 1,492,118 | Shares | 2026-08-13 | |
| Mega NEUBERGER BERMAN GROUP LLC Holding company | $185,212,423 | 2.32% | 1,441,454 | Shares | 2026-08-13 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $157,608,915 | 1.98% | 1,226,624 | Shares | 2026-08-11 | |
| Mega Allianz Asset Management GmbH | $144,839,323 | 1.82% | 1,127,242 | Shares | 2026-09-02 | |
| Large WASATCH ADVISORS LP Registered adviser | $143,723,103 | 1.80% | 1,297,257 | Shares | 2026-10-13 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $140,147,640 | 1.76% | 1,090,728 | Shares | 2026-08-11 | |
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Adviser | $136,305,789 | 1.71% | 1,060,828 | Shares | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $127,037,162 | 1.59% | 988,693 | Shares | 2026-08-14 | |
| Large GW&K Investment Management, LLC Registered adviser | $119,040,073 | 1.49% | 926,454 | Shares | 2026-08-12 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $116,687,422 | 1.46% | 908,144 | Shares | 2026-08-14 | |
| Mega Pictet Asset Management Holding SA | $113,667,136 | 1.43% | 884,638 | Shares | 2026-07-30 | |
| Mega NORGES BANK Non-US | $101,917,111 | 1.28% | 793,191 | Shares | 2026-08-12 | |
| Mega MORGAN STANLEY Holding company | $101,085,649 | 1.27% | 786,720 | Shares | 2026-08-13 | |
| Large CONGRESS ASSET MANAGEMENT CO Registered adviser | $99,139,988 | 1.24% | 894,846 | Shares | 2026-10-06 | |
| Mega Invesco Ltd. Adviser | $96,428,915 | 1.21% | 750,478 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $93,135,459 | 1.17% | 724,846 | Shares | 2026-08-12 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $92,425,682 | 1.16% | 719,322 | Shares | 2026-08-14 | |
| Mid Conestoga Capital Advisors, LLC Adviser | $92,074,777 | 1.15% | 716,591 | Shares | 2026-07-24 | |
| Mega NORTHERN TRUST CORP Bank | $89,886,076 | 1.13% | 699,557 | Shares | 2026-08-13 | |
| Mid Van Berkom & Associates Inc. Registered adviser | $87,635,962 | 1.10% | 682,045 | Shares | 2026-08-05 | |
| Mega FRANKLIN RESOURCES INC Adviser | $79,307,238 | 0.99% | 617,225 | Shares | 2026-08-13 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $78,502,890 | 0.98% | 610,965 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $73,120,316 | 0.92% | 569,074 | Shares | 2026-08-11 | |
| Large VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. Registered adviser | $69,431,368 | 0.87% | 540,364 | Shares | 2026-07-16 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $55,839,569 | 0.70% | 434,583 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $53,054,801 | 0.67% | 412,910 | Shares | 2026-08-06 | |
| Mid NEUMEIER POMA INVESTMENT COUNSEL LLC Registered adviser | $51,910,987 | 0.65% | 404,008 | Shares | 2026-08-13 | |
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE | $50,910,436 | 0.64% | 396,221 | Shares | 2026-09-09 | |
| Mega T. Rowe Price Investment Management, Inc. Adviser | $50,177,400 | 0.63% | 390,516 | Shares | 2026-08-14 | |
| Mid Waratah Capital Advisors Ltd. Registered adviser | $46,282,098 | 0.58% | 360,200 | Shares | 2026-08-11 | |
| Large BESSEMER GROUP INC | $45,916,544 | 0.58% | 357,375 | Shares | 2026-08-12 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $45,207,021 | 0.57% | 351,833 | Shares | 2026-08-04 | |
| Mega Jupiter Topco LLC | $43,602,052 | 0.55% | 339,342 | Shares | 2026-08-14 | |
| Large SILVERCREST ASSET MANAGEMENT GROUP LLC Registered adviser | $43,108,009 | 0.54% | 335,497 | Shares | 2026-08-14 | |
| Mid Global Alpha Capital Management Ltd. Adviser | $42,011,861 | 0.53% | 326,966 | Shares | 2026-08-13 | |
| Mega RAYMOND JAMES FINANCIAL INC | $41,478,624 | 0.52% | 322,816 | Shares | 2026-08-14 | |
| Mid Sandhill Capital Partners LLC Registered adviser | $40,786,195 | 0.51% | 317,427 | Shares | 2026-08-13 | |
| Large GAMCO INVESTORS, INC. ET AL Registered adviser | $40,639,459 | 0.51% | 316,285 | Shares | 2026-08-12 | |
| Mid EULAV Asset Management Registered adviser | $37,562,252 | 0.47% | 292,336 | Shares | 2026-07-29 | |
| Large Driehaus Capital Management LLC Registered adviser | $36,772,424 | 0.46% | 286,189 | Shares | 2026-08-14 | |
| Large Public Sector Pension Investment Board Non-US | $36,498,483 | 0.46% | 284,057 | Shares | 2026-08-13 | |
| Small Pembroke Management, LTD Registered adviser | $36,412,395 | 0.46% | 283,387 | Shares | 2026-08-13 | |
| Mid OBERWEIS ASSET MANAGEMENT INC/ Registered adviser | $34,574,603 | 0.43% | 269,084 | Shares | 2026-08-14 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $34,381,225 | 0.43% | 267,579 | Shares | 2026-09-23 | |
| Large FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ | $31,816,672 | 0.40% | 287,180 | Shares | 2026-10-15 | |
| Small Congruence Capital, LLC Registered adviser | $31,346,163 | 0.39% | 243,958 | Shares | 2026-08-13 | |
| Large Allspring Global Investments Holdings, LLC Holding company | $30,042,631 | 0.38% | 233,813 | Shares | 2026-08-13 | |
| Mid ArrowMark Colorado Holdings LLC Registered adviser | $29,420,869 | 0.37% | 228,974 | Shares | 2026-08-13 | |
| Mega UBS Group AG Bank | $28,097,678 | 0.35% | 218,676 | Shares | 2026-08-13 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $28,030,735 | 0.35% | 218,155 | Shares | 2026-08-14 | |
| Mid Aperture Investors, LLC Registered adviser | $27,794,442 | 0.35% | 216,316 | Shares | 2026-08-14 | |
| Large Thrivent Financial for Lutherans Registered adviser | $27,609,288 | 0.35% | 214,875 | Shares | 2026-08-14 | |
| Mega SEI INVESTMENTS CO | $27,550,439 | 0.35% | 214,417 | Shares | 2026-08-14 | |
| Mid DF DENT & CO INC Registered adviser | $27,495,575 | 0.34% | 213,990 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $26,592,932 | 0.33% | 206,965 | Shares | 2026-08-14 | |
| Large LOOMIS SAYLES & CO L P Registered adviser | $25,716,630 | 0.32% | 200,145 | Shares | 2026-08-14 | |
| Large Handelsbanken Fonder AB Non-US | $24,960,338 | 0.31% | 194,259 | Shares | 2026-07-10 | |
| Large Universal- Beteiligungs- und Servicegesellschaft mbH | $24,852,407 | 0.31% | 193,419 | Shares | 2026-08-06 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $23,876,909 | 0.30% | 185,827 | Shares | 2026-08-14 | |
| Mega Capital Research Global Investors Adviser | $23,353,699 | 0.29% | 181,755 | Shares | 2026-08-12 | |
| Mid Ranger Investment Management, L.P. Registered adviser | $23,054,703 | 0.29% | 179,428 | Shares | 2026-08-13 | |
| Large GABELLI FUNDS LLC Registered adviser | $22,948,314 | 0.29% | 178,600 | Shares | 2026-08-12 | |
| Large Squarepoint Ops LLC Registered adviser | $22,655,099 | 0.28% | 176,318 | Shares | 2026-08-14 | |
| Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Non-US | $20,171,131 | 0.25% | 156,986 | Shares | 2026-08-13 | |
| Small DUDLEY & SHANLEY, INC. Registered adviser | $19,282,999 | 0.24% | 174,050 | Shares | 2026-10-06 | |
| Large NATIXIS ADVISORS, LLC Registered adviser | $18,385,376 | 0.23% | 143,088 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $18,331,411 | 0.23% | 142,668 | Shares | 2026-08-12 | |
| Mega Legal & General Group Plc | $17,804,215 | 0.22% | 138,565 | Shares | 2026-08-14 | |
| Mega DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | $17,027,366 | 0.21% | 132,519 | Shares | 2026-08-14 | |
| Large FRED ALGER MANAGEMENT, LLC Registered adviser | $16,814,972 | 0.21% | 130,866 | Shares | 2026-08-14 | |
| Mega California Public Employees Retirement System | $16,382,346 | 0.21% | 127,499 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $15,792,059 | 0.20% | 122,905 | Shares | 2026-08-13 | |
| Small Montanaro Asset Management Ltd | $15,744,008 | 0.20% | 122,531 | Shares | 2026-08-12 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $15,615,518 | 0.20% | 121,531 | Shares | 2026-08-13 | |
| Large Schonfeld Strategic Advisors LLC Registered adviser | $15,408,263 | 0.19% | 119,918 | Shares | 2026-08-14 | |
| Mega Swiss National Bank | $15,303,159 | 0.19% | 119,100 | Shares | 2026-08-11 | |
| Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. Non-US | $12,494,623 | 0.16% | 97,242 | Shares | 2026-08-13 | |
| Large TUDOR INVESTMENT CORP ET AL Registered adviser | $12,285,571 | 0.15% | 95,615 | Shares | 2026-08-14 | |
| Large MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC Registered adviser | $12,222,225 | 0.15% | 95,122 | Shares | 2026-08-11 | |
| Large Baird Financial Group, Inc. | $12,209,246 | 0.15% | 95,021 | Shares | 2026-08-12 | |
| Large FIFTH THIRD BANCORP Bank | $11,928,497 | 0.15% | 92,836 | Shares | 2026-08-05 | |
| Mid SCOPUS ASSET MANAGEMENT, L.P. Registered adviser | $11,727,410 | 0.15% | 91,271 | Shares | 2026-08-14 | |
| Large PICTON MAHONEY ASSET MANAGEMENT Non-US | $11,506,022 | 0.14% | 89,548 | Shares | 2026-08-13 | |
| Large BAHL & GAYNOR INC Adviser | $11,133,530 | 0.14% | 86,649 | Shares | 2026-08-13 | |
| Mid ALTA CAPITAL MANAGEMENT LLC/ Registered adviser | $11,084,061 | 0.14% | 86,264 | Shares | 2026-07-28 | |
| Mega VICTORY CAPITAL MANAGEMENT INC Registered adviser | $10,860,745 | 0.14% | 84,526 | Shares | 2026-08-07 | |
| Mega ROYAL BANK OF CANADA Bank | $10,811,403 | 0.14% | 84,142 | Shares | 2026-08-14 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $10,442,253 | 0.13% | 81,269 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $10,333,034 | 0.13% | 80,419 | Shares | 2026-08-06 | |
| Large LOS ANGELES CAPITAL MANAGEMENT LLC Registered adviser | $10,308,110 | 0.13% | 80,225 | Shares | 2026-08-13 | |
| Mid SCOPUS ASSET MANAGEMENT, L.P. Registered adviser | $10,279,200 | 0.13% | 80,000 | Put | 2026-08-14 | |
| Mega VAN ECK ASSOCIATES CORP Registered adviser | $10,201,077 | 0.13% | 79,392 | Shares | 2026-08-14 | |
| Mega STIFEL FINANCIAL CORP | $9,615,162 | 0.12% | 74,832 | Shares | 2026-08-12 | |
| Small CARDEROCK CAPITAL MANAGEMENT INC | $9,607,711 | 0.12% | 74,774 | Shares | 2026-07-07 |
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