DX · Insider trading · 13F holders · Congress trades
Dynex Capital Inc (DX)
Who is buying and selling DX: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 14
- Insider buys, 90 days
- $295K
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
DX at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 4 DX insiders filed 4 open-market purchases worth $295K on SEC Form 4.
- 14 13F filers hold DX among their 50 largest positions, worth $53.2M combined. The biggest bets by portfolio weight are Longboard Asset Management, LP (4.6%), Waterfall Asset Management, LLC (3.6%) and GraniteShares Advisors LLC (1.5%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
- No member of Congress has disclosed a trade in DX.
- DX last closed at $10.89 on Oct 29, 2026.
DX insider trading
Between Aug 1, 2026 and Oct 29, 2026, 4 DX insiders filed 4 open-market purchases worth $295K on SEC Form 4.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 21, 2026 | Boston Byron L | Co-CEO & Chairman of the Board, Director | Buy | 9,180 | $10.89 | $100K | SEC |
| Oct 20, 2026 | Popenoe Smriti Laxman | Co-CEO and President, Director | Buy | 12,000 | $13.05 | $157K | SEC |
| Oct 20, 2026 | Sartori Michael Andrew | Chief Financial Officer | Buy | 1,000 | $10.70 | $11K | SEC |
| Sep 28, 2026 | Connelly Terrence John JR | Chief Investment Officer | Buy | 2,500 | $11.18 | $28K | SEC |
Who owns DX? Hedge funds and superinvestors
14 13F filers hold DX among their 50 largest positions, worth $53.2M combined. The biggest bets by portfolio weight are Longboard Asset Management, LP (4.6%), Waterfall Asset Management, LLC (3.6%) and GraniteShares Advisors LLC (1.5%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Callodine Capital Management, LPHedge fund | 1.4% | $21.5M | 1,642,300 | -1.7% shares | Q2 2026 |
| Algebris (UK) LtdHedge fund | 1.0% | $15.6M | 1,193,447 | — | Q2 2026 |
| Waterfall Asset Management, LLCHedge fund | 3.6% | $4.2M | 322,500 | +9.3% shares | Q2 2026 |
| Gsa Capital Partners LLPHedge fund | 0.2% | $3.2M | 246,089 | — | Q2 2026 |
| GraniteShares Advisors LLCMutual fund manager | 1.5% | $2.3M | 203,627 | +1.6% shares | Q3 2026 |
| Bramshill Investments, LLCAsset manager | 0.1% | $1.6M | 120,880 | +1.2% shares | Q2 2026 |
| Mariner Investment Group LLCHedge fund | 0.5% | $1.2M | 95,000 | +0.0% shares | Q2 2026 |
| Morling Financial Advisors, LLCWealth manager | 0.3% | $1.0M | 90,726 | +4.0% shares | Q3 2026 |
| Significant Wealth Partners LLCWealth manager | 1.1% | $976K | 74,446 | +1.9% shares | Q2 2026 |
| Kingstone Capital Partners Texas, LLCWealth manager | 0.3% | $474K | 36,154 | +3.9% shares | Q2 2026 |
| Westend Capital Management, LLCWealth manager | 0.1% | $366K | 27,955 | +25.3% shares | Q2 2026 |
| Mann Financial Group, Inc.Wealth manager | 0.2% | $309K | 27,730 | New | Q3 2026 |
| Longboard Asset Management, LPMutual fund manager | 4.6% | $170K | 15,285 | +0.0% shares | Q3 2026 |
| Attessa Capital LLCWealth manager | 0.1% | $168K | 15,116 | +0.0% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 5, Q2 2026: 9). Screen DX in the grand portfolio →
DX stock trades by members of Congress
No member of Congress has disclosed a trade in DX.
Analysis mentioning DX
Posts from the blog that cover Dynex Capital Inc, newest first.
DX questions and answers
Are insiders buying DX stock?
Between Aug 1, 2026 and Oct 29, 2026, 4 DX insiders filed 4 open-market purchases worth $295K on SEC Form 4.
Which hedge funds own DX?
14 13F filers hold DX among their 50 largest positions, worth $53.2M combined. The biggest bets by portfolio weight are Longboard Asset Management, LP (4.6%), Waterfall Asset Management, LLC (3.6%) and GraniteShares Advisors LLC (1.5%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
Has Congress traded DX?
No member of Congress has disclosed a trade in DX.
Who is the largest holder of DX?
Among 13F filers, Callodine Capital Management, LP reports the largest DX position, $21.5M (1,642,300 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Longboard Asset Management, LP's: 4.6% of its portfolio.
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