Among active 13F managers last quarter, 5 opened and 26 added, while 18 reduced; the largest holder to move was Renaissance Technologies LLC (+1.2%). Over the last 180 days, 2 insiders bought and 2 insiders sold, a net +$44K in open-market trades.
Funds lean in and no leg opposes.
120 tracked 13F filers disclose a position in SPOK as of the latest SEC 13F filings, a combined $108.2M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 1.7M | $17.6M | ▲+2.6% Added · +43K sh | Q2 2026 | |
| 2 | Renaissance Technologies LLC | 1.3M | $13.8M | ▲+1.2% Added · +15K sh | Q1 2026 | |
| 3 | Vanguard Capital Management LLC | 872K | $8.9M | ▲+1.5% Added · +13K sh | Q2 2026 | |
| 4 | Dimensional Fund Advisors LP | 716K | $7.8M | ▲+1.7% Added · +12K sh | Q1 2026 | |
| 5 | Geode Capital Management, LLC | 596K | $6.1M | ▲+9.2% Added · +50K sh | Q2 2026 | |
| 6 | State Street Corp | 472K | $4.8M | ▲+2.1% Added · +10K sh | Q2 2026 | |
| 7 | HighTower Advisors, LLC | 382K | $4.2M | ▼−0.1% Reduced · −560 sh | Q1 2026 | |
| 8 | Vanguard Portfolio Management LLC | 273K | $2.8M | ▲+3.1% Added · +8K sh | Q2 2026 | |
| 9 | Goldman Sachs Group Inc | 220K | $2.4M | ▼−39% Reduced · −143K sh | Q1 2026 | |
| 10 | Bank of New York Mellon Corp | 218K | $2.4M | ▲+2.3% Added · +5K sh | Q1 2026 | |
| 11 | Northern Trust Corp | 217K | $2.4M | ▼−0.3% Reduced · −551 sh | Q1 2026 | |
| 12 | Uniplan Investment Counsel, Inc. | 216K | $2.2M | ▲+2.9% Added · +6K sh | Q2 2026 | |
| 13 | United Capital Financial Advisors, LLC | 195K | $2.0M | ▲+86% Added · +90K sh | Q2 2026 | |
| 14 | Citadel Advisors LLC | 183K | $1.9M | ▲10× Added · +166K sh | Q2 2026 | |
| 15 | Qube Research & Technologies Ltd | 172K | $1.9M | ▼−3.4% Reduced · −6K sh | Q1 2026 | |
| 16 | Jacobs Levy Equity Management, Inc | 160K | $1.6M | ▲+37% Added · +44K sh | Q2 2026 | |
| 17 | Morgan Stanley | 160K | $1.7M | ▼−10% Reduced · −18K sh | Q1 2026 | |
| 18 | Vanguard Fiduciary Trust Co | 137K | $1.4M | ▲+5.9% Added · +8K sh | Q2 2026 | |
| 19 | Marshall Wace, LLP | 113K | $1.2M | ▲New +113K sh | Q1 2026 | |
| 20 | Connor, Clark & Lunn Investment Management Ltd. | 107K | $1.1M | ▼−26% Reduced · −37K sh | Q2 2026 | |
| 21 | Panagora Asset Management Inc | 93K | $953K | ▲+19% Added · +15K sh | Q2 2026 | |
| 22 | D. E. Shaw & Co., Inc. | 89K | $975K | ▲+27% Added · +19K sh | Q1 2026 | |
| 23 | FMR LLC | 89K | $913K | ▲+493% Added · +74K sh | Q2 2026 | |
| 24 | Jane Street Group, LLC | 87K | $943K | ▲+529% Added · +73K sh | Q1 2026 | |
| 25 | Fidelis Capital Partners, LLC | 75K | $769K | ▲+0.1% Added · +71 sh | Q2 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 5 funds opened a new position in SPOK and 26 added to an existing one, while 18 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Alphabet Inc-CL AGOOGL | 61 funds | $89.1B |
| Microsoft CorpMSFT | 59 funds | $125.0B |
| JPMorgan Chase & CoJPM | 59 funds | $30.4B |
| Chevron CorpCVX | 59 funds | $12.8B |
| Nvidia CorpNVDA | 58 funds | $210.5B |
| Amazon.com IncAMZN | 58 funds | $96.5B |
| Broadcom IncAVGO | 58 funds | $84.9B |
| Eli Lilly & CoLLY | 58 funds | $45.3B |
| Texas Instruments IncTXN | 58 funds | $12.0B |
| Wells Fargo & CoWFC | 58 funds | $9.5B |
| Apple IncAAPL | 57 funds | $151.7B |
| Advanced Micro DevicesAMD | 57 funds | $35.2B |
Ranked by how many of SPOK's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in SPOK.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 10, 2026 | Woods-Keisling Sharon | Corporate Secretary, Treasurer | Sell (S) | 20K | $226K |
| Aug 10, 2026 | Cournoyer Christine | Director | Sell (S) | 8K | $94K |
| Jun 16, 2026 | Stein Todd J | Director | Buy (P) 3 lots, same day | 35K | $367K |
| May 12, 2026 | Kelly Vincent D | President & CEO, Director | Buy (P) | 5K | $53K |
| May 11, 2026 | Kelly Vincent D | President & CEO, Director | Buy (P) | 5K | $53K |
| May 5, 2026 | Woods-Keisling Sharon | Corporate Secretary, Treasurer | Sell (S) | 10K | $110K |
| Sep 4, 2025 | Stein Todd J | Director | Sell (S) 3 lots, same day | 38K | $687K |
| Sep 3, 2025 | Stein Todd J | Director | Sell (S) 3 lots, same day | 43K | $781K |
| Sep 2, 2025 | Stein Todd J | Director | Sell (S) 2 lots, same day | 23K | $410K |
| Aug 25, 2025 | Stein Todd J | Director | Sell (S) 3 lots, same day | 12K | $211K |
| Aug 25, 2025 | Wallace Michael W | Chief Operating Officer | Sell (S) | 11K | $193K |
| Aug 22, 2025 | Stein Todd J | Director | Sell (S) 2 lots, same day | 9K | $160K |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 47 | 35 | – |
Insiders Form 4 open-market | 2 | 2 | +$44K |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for SPOK
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/SPOK/capital-change-brief"
Use Arkolith's capital_change_brief for SPOK. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for SPOK. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.