SPOK HOLDINGS INC (SPOK) Institutional Ownership Changes & 13F Activity
SPOK HOLDINGS INC (SPOK). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Citadel Advisors Llc, Qube Research & Technologies Ltd, United Capital Financial Advisors, Llc, Trexquant Investment Lp, and Jane Street Group, Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Citadel Advisors Llc | Buy | +165,672 | +932.1% | 183,447 | $1.88M | Q2 2026 | Sep 02, 2026 |
| California State Teachers Retirement System | Sell | -816 | -74.0% | 286 | $2.93K | Q2 2026 | Aug 24, 2026 |
| Mercer Global Advisors Inc | Buy | +15,330 | — | 15,330 | $156.98K | Q2 2026 | Aug 19, 2026 |
| United Capital Financial Advisors, Llc | Buy | +90,092 | +86.0% | 194,815 | $1.99M | Q2 2026 | Aug 17, 2026 |
| Public Employees Retirement System Of Ohio | Buy | +10,115 | +94.8% | 20,788 | $212.87K | Q2 2026 | Aug 17, 2026 |
| Empowered Funds, Llc | Sell | -84 | -0.6% | 15,119 | $154.82K | Q2 2026 | Aug 17, 2026 |
| Qube Research & Technologies Ltd | Buy | +115,560 | +67.2% | 287,617 | $2.95M | Q2 2026 | Aug 14, 2026 |
| Trexquant Investment Lp | Sell | -89,672 | -69.6% | 39,184 | $401.24K | Q2 2026 | Aug 14, 2026 |
| Jane Street Group, Llc | Sell | -71,331 | -82.4% | 15,193 | $155.58K | Q2 2026 | Aug 14, 2026 |
| Point72 Asset Management, L.P. | Sell | -70,522 | -78.7% | 19,105 | $195.63K | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +62,399 | +28.4% | 281,980 | $2.89M | Q2 2026 | Aug 14, 2026 |
| Atom Investors Lp | Buy | +44,289 | — | 44,289 | $453.52K | Q2 2026 | Aug 14, 2026 |
| Jacobs Levy Equity Management, Inc | Buy | +43,502 | +37.2% | 160,312 | $1.64M | Q2 2026 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | Buy | +40,712 | +45.5% | 130,163 | $1.33M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +39,014 | — | 39,014 | $399.50K | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +34,792 | — | 34,792 | $356.27K | Q2 2026 | Aug 14, 2026 |
| Hsbc Holdings Plc | Sell | -29,445 | -71.0% | 12,054 | $124.52K | Q2 2026 | Aug 14, 2026 |
| Schonfeld Strategic Advisors Llc | Buy | +24,450 | — | 24,450 | $250.37K | Q2 2026 | Aug 14, 2026 |
| Numerai Gp Llc | Sell | -22,793 | -33.0% | 46,223 | $473.32K | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Sell | -14,775 | -39.8% | 22,380 | $229.17K | Q2 2026 | Aug 14, 2026 |
| Brevan Howard Capital Management Lp | Buy | +14,010 | — | 14,010 | $143.46K | Q2 2026 | Aug 14, 2026 |
| Charles Schwab Investment Management Inc | Buy | +13,822 | +24.7% | 69,857 | $715.34K | Q2 2026 | Aug 14, 2026 |
| Man Group Plc | Buy | +9,387 | +19.4% | 57,712 | $590.97K | Q2 2026 | Aug 14, 2026 |
| Wells Fargo & Company/Mn | Buy | +9,352 | +49.2% | 28,343 | $290.23K | Q2 2026 | Aug 14, 2026 |
| Barclays Plc | Sell | -8,811 | -57.5% | 6,509 | $66.65K | Q2 2026 | Aug 14, 2026 |
| Bridgeway Capital Management, Llc | Buy | +8,000 | +30.1% | 34,600 | $354.30K | Q2 2026 | Aug 14, 2026 |
| Uniplan Investment Counsel, Inc. | Buy | +6,162 | +2.9% | 215,764 | $2.21M | Q2 2026 | Aug 14, 2026 |
| Osaic Holdings, Inc. | Buy | +5,892 | +3928.0% | 6,042 | $61.86K | Q2 2026 | Aug 14, 2026 |
| Cambria Investment Management, L.P. | Buy | +5,842 | +29.6% | 25,586 | $262.00K | Q2 2026 | Aug 14, 2026 |
| Metlife Investment Management, Llc | Buy | +4,804 | +74.2% | 11,276 | $115.47K | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about SPOK activity
Which institutional owners are buying SPOK?
Institutional owners buying SPOK include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in SPOK activity?
"Buy" means an investor increased their reported position in SPOK compared to the prior reporting period. This reflects growing exposure to SPOK HOLDINGS INC (SPOK) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in SPOK increasing?
Institutional interest in SPOK can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related SPOK Institutional Insights
- SPOK Overview
- SPOK 13F Institutional Holders
- SPOK Top Institutional Shareholders
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- SPOK Insider Trading & SEC Form 4 Activity
- SPOK Articles
- Top Institutional Investor Stock Rankings