Mario Gabelli's REGN Position Overview
Mario Gabelli (via Gamco Investors, Inc. Et Al) currently holds 639 shares of Regeneron Pharmaceuticals, Inc. (REGN) worth $493,717, representing 0.00% of the portfolio. First purchased in 2014-Q2, this long-term strategic position has been held for 23 quarters.
Based on 13F filings, Mario Gabelli has maintained a strategic position in REGN, demonstrating sustained confidence in this investment. Largest addition occurred in Q2 2017, adding 492 shares. Largest reduction occurred in Q3 2016, reducing 800 shares.
Analysis based on 13F filings available since 2013 Q2
Mario Gabelli's Regeneron Pharmaceuticals (REGN) Holding Value Over Time
Track share changes against reported price movement
Quarterly Regeneron Pharmaceuticals (REGN) Trades by Mario Gabelli
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | -10 | Reduce 1.54% | 639 | $772.64 |
| Q4 2025 | +3 | Add 0.46% | 649 | $771.87 |
| Q3 2025 | +44 | Add 7.31% | 646 | $562.27 |
| Q2 2025 | +13 | Add 2.21% | 602 | $525.00 |
| Q1 2025 | +26 | Add 4.62% | 589 | $634.23 |
| Q4 2024 | +198 | Add 54.25% | 563 | $712.33 |
| Q3 2024 | +58 | Add 18.89% | 365 | $1051.24 |
| Q2 2024 | +68 | Add 28.45% | 307 | $1051.03 |
| Q1 2024 | +239 | New Buy | 239 | $962.49 |
| Q4 2017 | -482 | Sold Out | 0 | $0.00 |
| Q3 2017 | -10 | Reduce 2.03% | 482 | $448.13 |
| Q2 2017 | +492 | New Buy | 492 | $491.87 |
| Q4 2016 | -529 | Sold Out | 0 | $0.00 |
| Q3 2016 | -800 | Reduce 60.20% | 529 | $402.65 |
| Q2 2016 | -14 | Reduce 1.04% | 1,329 | $349.13 |
| Q1 2016 | -35 | Reduce 2.54% | 1,343 | $360.39 |
| Q4 2015 | -767 | Reduce 35.76% | 1,378 | $542.82 |
| Q2 2015 | -45 | Reduce 2.05% | 2,145 | $510.02 |
| Q3 2014 | -105 | Reduce 4.58% | 2,190 | $360.73 |
| Q2 2014 | +2,295 | New Buy | 2,295 | $282.35 |
Mario Gabelli's Regeneron Pharmaceuticals Investment FAQs
Mario Gabelli first purchased Regeneron Pharmaceuticals, Inc. (REGN) in Q2 2014, acquiring 2,295 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli has held Regeneron Pharmaceuticals, Inc. (REGN) for 23 quarters since Q2 2014.
Mario Gabelli's largest addition to Regeneron Pharmaceuticals, Inc. (REGN) was in Q2 2014, adding 2,295 shares worth $648,000.
According to the latest 13F filing for Q1 2026, Mario Gabelli's firm, Gamco Investors, Inc. Et Al, owns 639 shares of Regeneron Pharmaceuticals, Inc. (REGN), valued at approximately $493,717.
As of the Q1 2026 filing, Regeneron Pharmaceuticals, Inc. (REGN) represents approximately 0.00% of Mario Gabelli's publicly disclosed stock portfolio, making it one of their key holdings.
Mario Gabelli's peak holding in Regeneron Pharmaceuticals, Inc. (REGN) was 2,295 shares, as reported at the end of Q2 2014.