MD Institutional Ownership Changes & 13F Activity
PEDIATRIX MEDICAL GROUP INC (MD) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC, Sequoia Financial Advisors, Lountzis Asset Management, Hancock Classic Value, and First Eagle U.S. Value.
Related MD insights
- MD Overview
- MD Top Shareholders
- MD Ownership Trend
- MD Institutional Buying
- MD Institutional Selling
- MD Ownership Changes
- MD Insider Trading
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Owners in Q1 2026
- Most Sold Healthcare Stocks By Institutional Owners in Q1 2026
- Top Institutional Investor Stock Rankings
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2018 | Renaissance Technologies LLC | Sell | -85,000 | 492,200 | $16,243 |
| Q3 2018 | Hancock Classic Value | Buy | 954,322 | 3,254,122 | $151,837 |
| Q3 2018 | Renaissance Technologies LLC | Buy | 325,000 | 577,200 | $26,932 |
| Q2 2018 | Hancock Classic Value | Buy | 41,088 | 2,299,800 | $99,535 |
| Q1 2018 | Hancock Classic Value | Buy | 1,296,682 | 2,258,712 | $125,652 |
| Q4 2017 | Hancock Classic Value | Buy | 962,030 | 962,030 | $51,411 |
| Q2 2016 | Renaissance Technologies LLC | Sell | -189,400 | 252,200 | $18,267 |
| Q1 2016 | Renaissance Technologies LLC | Buy | 70,600 | 441,600 | $28,536 |
| Q2 2015 | Renaissance Technologies LLC | Sell | -89,300 | 371,000 | $27,495 |
| Q1 2015 | Renaissance Technologies LLC | Buy | 107,000 | 460,300 | $33,376 |
| Q4 2014 | Renaissance Technologies LLC | Sell | -46,500 | 353,300 | $23,357 |
| Q4 2014 | Sequoia Financial Advisors | Sell | -1,045 | 3,208 | $212 |
| Q3 2014 | Renaissance Technologies LLC | Buy | 370,100 | 399,800 | $21,917 |
| Q3 2014 | Sequoia Financial Advisors | Sell | -1,830 | 4,253 | $233 |
| Q2 2014 | Renaissance Technologies LLC | Buy | 24,700 | 29,700 | $1,727 |
| Q2 2014 | Sequoia Financial Advisors | Buy | 280 | 6,083 | $354 |
| Q1 2014 | Renaissance Technologies LLC | Buy | 5,000 | 5,000 | $310 |
| Q1 2014 | Sequoia Financial Advisors | Buy | 643 | 5,803 | $360 |
| Q4 2013 | Sequoia Financial Advisors | Buy | 5,160 | 5,160 | $275 |
| Q4 2013 | First Eagle U.S. Value | Buy | 4,000 | 8,000 | $427 |
| Q2 2013 | First Eagle U.S. Value | Buy | 4,000 | 4,000 | $366 |
Frequently asked questions about MD activity
Which institutional owners are buying MD?
Institutional owners buying MD 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 MD activity?
"Buy" means an investor increased their reported position in MD compared to the prior reporting period. This reflects growing exposure to PEDIATRIX MEDICAL GROUP INC (MD) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in MD increasing?
Institutional interest in MD 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.