SPOK Spok Holdings, Inc: institutional ownership and insider trading
142 funds reported holding $136M of Spok Holdings, Inc in their latest 13F filings; in Q2 2026 funds net bought $4.14M, with 20 new positions and 23 funds selling out; over the last 12 months insiders bought $473K and sold $430K on the open market.
Famous investors holding SPOK
- Renaissance Technologies (Renaissance Technologies): $11.8M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $1.88M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $1.33M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $237K, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $229K, 0.0% of the portfolio
Largest institutional holders of SPOK
- BlackRock, Inc. (BLK) — $17.6M
- VANGUARD GROUP INC — $16.2M
- RENAISSANCE TECHNOLOGIES LLC — $11.8M
- VANGUARD CAPITAL MANAGEMENT LLC — $8.93M
- DIMENSIONAL FUND ADVISORS LP — $7.35M
- GEODE CAPITAL MANAGEMENT, LLC — $6.10M
- Foundry Partners, LLC — $5.92M
- STATE STREET CORP (STT, STT-PG) — $4.83M
- HighTower Advisors, LLC — $3.48M
- Qube Research & Technologies Ltd — $2.95M
Recent SPOK insider trades
- Aug 10, 2026: Cournoyer Christine sold 8,320 shares ($93.9K)
- Aug 10, 2026: Woods-Keisling Sharon sold 20,000 shares ($226K)
- Jun 16, 2026: Stein Todd J bought 35,211 shares ($367K)
- May 12, 2026: Kelly Vincent D bought 10,000 shares ($107K)
5%+ owners
- Renaissance Technologies LLC: 5.1% (Schedule 13G, filed Aug 13, 2025)