Issued 2026-09-16 at $58.74 · now $58.74 (2026-09-16, +0.0% since)
Based on its own history, a month from the 2026-09-16 close, DLB has typically landed between $52.58 and $65.03 — a range of −10.5% to +10.7% from the issuance price $58.74.
- Actual close
- Typical path (median)
- Middle 50% of outcomes
- 90% range
5,003 overlapping 1 month windows · 2006-09-26 – 2026-08-17 · basis climatology · forecast (batch). Probability up 53.9% (90% CI 51.7–56.1%, ≈1,408 obs).
The cone is anchored at the 2026-09-16 issuance close ($58.74) — the price the forecast resolves against on 2026-10-15, not the latest close. The drawn path shape is illustrative (bands widen with √t); every labeled number is real — the anchor, the scored batch p90/IQR endpoints, and the typical move.
Where DLB has typically landed a month from the 2026-09-16 close of $58.74 — the range is history, not a prediction.
- now $58.74 (+0.0%)
- typicalThe typical outcome — half of similar past periods did better and half did worse (not an average, so a few wild periods don't skew it). $58.32 (-0.7%)
- middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $55.9–$60.74
- 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $52.58–$65.03
Actual 1-month windows behind the coneiEvery overlapping 1-month window in this security's own price history was ranked by realized return; shown are the 3 worst and 3 best of 5,003 windows spanning 2006-09-26 to 2026-09-16. Not cherry-picked — these are the extremes of the full sample. Max drop / max rise are the deepest and highest points reached within each window. See /methodology.
| Start | Return | Max drop | Max rise |
|---|---|---|---|
| 3 worst | |||
| 2020-02-18 | −34.9% | −34.9% | +1.3% |
| 2020-02-21 | −32.7% | −35.3% | +0.0% |
| 2020-02-20 | −32.2% | −35.7% | +0.0% |
| 3 best | |||
| 2006-11-09 | +53.2% | +0.0% | +55.9% |
| 2006-11-08 | +50.8% | −3.2% | +50.8% |
| 2006-10-18 | +49.4% | −0.3% | +49.4% |
5,003 overlapping windows · 2006-09-26 – 2026-09-16 · not cherry-picked
Seasonality · by month iHow this security has tended to do in each calendar month historically — a frequency, never a prediction.
iFor each calendar month, the share of years this security closed higher than the month before, and the average month-over-month return, over ~20 years of its own price history. Cells are shaded by average return. This is historical frequency, not a prediction — no month is a signal.Jan
60%
+0.7%
n=20
Feb
65%
+0.8%
n=20
Mar
55%
+1.1%
n=20
Apr
65%
+2.9%
n=20
May
40%
−0.2%
n=20
Jun
45%
−1.5%
n=20
Jul
65%
+1.8%
n=20
Aug
35%
−3.1%
n=20
Sep
40%
−1.9%
n=20
Oct
60%
+1.6%
n=20
Nov
80%
+7.5%
n=20
Dec
45%
+1.1%
n=20
Up-frequency and average month-over-month return · historical frequency, not a prediction
Reported insider & political trades
Every Form 4 the people closest to this company have filed with the SEC — plotted against the share price, aggregated by month, and shown with the gap between when each trade happened and when it was disclosed. A public record, not advice.
| Date | Person | Role | Action | Shares @ price | Value | Ownership Δ | vs S&P 1m | vs S&P 6m | Owned after | Filing |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-01 | Couling John D | officer | Sale | 7,667 @ $61.05 | $468K | −6.1% of holding | not yet — horizon still open | not yet — horizon still open | 118,727 | Form 4 · filed 2 days after the trade |
| 2026-08-25 | Nicholson Ryan | officer | Sale | 1,183 @ $65.28 | $77K | −3.3% of holding | not yet — horizon still open | not yet — horizon still open | 34,453 | Form 4 · filed 2 days after the trade |
| 2026-08-14 | Revankar Shriram | officer | Sale | 3,000 @ $62.71 | $188K | −3.9% of holding | −0.8% | not yet — horizon still open | 73,274 | Form 4 · filed 4 days after the trade |
| 2026-08-10 | Nicholson Ryan | officer | Sale | 1,348 @ $62.04 | $84K | −3.6% of holding | +1.5% | not yet — horizon still open | 35,636 | Form 4 · filed 2 days after the trade |
| 2026-08-04 | Nicholson Ryan | officer | Sale | 357 @ $60.63 | $22K | −1.0% of holding | +2.3% | not yet — horizon still open | 36,984 | Form 4 · filed 2 days after the trade |
| 2026-08-03 | Couling John D | officer | Sale | 6,884 @ $60.11 | $414K | −5.5% of holding | +2.9% | not yet — horizon still open | 118,727 | Form 4 · filed 2 days after the trade |
| 2026-08-03 | Couling John D | officer | Sale | 783 @ $59.03 | $46K | −0.6% of holding | +2.9% | not yet — horizon still open | 125,611 | Form 4 · filed 2 days after the trade |
| 2026-07-01 | Couling John D | officer | Sale | 7,667 @ $53.20 | $408K | −6.1% of holding | +11.7% | not yet — horizon still open | 118,727 | Form 4 · filed 5 days after the trade |
| 2026-06-01 | Couling John D | officer | Sale | 7,158 @ $55.59 | $398K | −5.7% of holding | −4.8% | not yet — horizon still open | 119,235 | Form 4 · filed 2 days after the trade |
| 2026-06-01 | Couling John D | officer | Sale | 508 @ $56.16 | $29K | −0.4% of holding | −4.8% | not yet — horizon still open | 118,727 | Form 4 · filed 2 days after the trade |
| 2026-05-22 | Pendleton Todd | officer | Sale | 11,876 @ $54.55 | $648K | −22.3% of holding | −2.4% | not yet — horizon still open | 41,480 | Form 4 · filed 5 days after the trade |
| 2026-05-15 | Revankar Shriram | officer | Sale | 3,000 @ $54.90 | $165K | −3.6% of holding | −4.0% | not yet — horizon still open | 80,603 | Form 4 · filed 4 days after the trade |
| 2026-05-12 | Park Robert J | officer | Sale | 4,504 @ $56.62 | $255K | −5.2% of holding | −4.7% | not yet — horizon still open | 81,881 | Form 4 · filed 2 days after the trade |
| 2026-05-12 | Park Robert J | officer | Sale | 391 @ $57.35 | $22K | −0.5% of holding | −4.7% | not yet — horizon still open | 81,490 | Form 4 · filed 2 days after the trade |
| 2026-05-05 | Couling John D | officer | Sale | 6,928 @ $57.47 | $398K | −5.5% of holding | −12.5% | not yet — horizon still open | 119,091 | Form 4 · filed 1 day after the trade |
| 2026-05-05 | Couling John D | officer | Sale | 738 @ $58.34 | $43K | −0.6% of holding | −12.5% | not yet — horizon still open | 118,353 | Form 4 · filed 1 day after the trade |
| 2026-05-04 | Couling John D | officer | Sale | 4,688 @ $58.47 | $274K | −3.8% of holding | −10.5% | not yet — horizon still open | 118,353 | Form 4 · filed 2 days after the trade |
| 2026-04-01 | Rollins Emily | director | Sale | 1,000 @ $60.08 | $60K | −7.4% of holding | −15.4% | not yet — horizon still open | 12,541 | Form 4 · filed 2 days after the trade |
| 2026-02-17 | Revankar Shriram | officer | Sale | 3,000 @ $66.14 | $198K | −3.5% of holding | −1.3% | −15.8% | 83,218 | Form 4 · filed same day |
| 2026-02-13 | Nicholson Ryan | officer | Sale | 2,667 @ $66.38 | $177K | −6.7% of holding | −5.2% | −19.9% | 36,956 | Form 4 · filed 4 days after the trade |
| 2026-02-02 | Couling John D | officer | Sale | 6,667 @ $64.89 | $433K | −5.1% of holding | +2.4% | −15.5% | 123,041 | Form 4 · filed 2 days after the trade |
| 2025-12-17 | YEAMAN KEVIN J | director | Sale | 6,671 @ $67.24 | $449K | −6.3% of holding | −9.4% | −32.8% | 98,457 | Form 4 · filed same day |
| 2025-12-17 | SHERMAN MARK ANDREW | officer | Sale | 2,491 @ $67.26 | $168K | −3.4% of holding | −9.4% | −32.8% | 70,563 | Form 4 · filed same day |
| 2025-12-17 | YEAMAN KEVIN J | director | Sale | 80 @ $67.54 | $5K | −0.1% of holding | −9.4% | −32.8% | 98,377 | Form 4 · filed same day |
| 2025-12-16 | YEAMAN KEVIN J | director | Sale | 21,772 @ $66.64 | $1.5M | −16.5% of holding | −8.7% | −31.7% | 110,122 | Form 4 · filed 1 day after the trade |
| 2025-12-16 | SHERMAN MARK ANDREW | officer | Sale | 6,738 @ $66.58 | $449K | −8.2% of holding | −8.7% | −31.7% | 75,425 | Form 4 · filed 1 day after the trade |
| 2025-12-16 | YEAMAN KEVIN J | director | Sale | 4,994 @ $67.16 | $335K | −4.5% of holding | −8.7% | −31.7% | 105,128 | Form 4 · filed 1 day after the trade |
| 2025-12-16 | SHERMAN MARK ANDREW | officer | Sale | 2,371 @ $67.17 | $159K | −3.1% of holding | −8.7% | −31.7% | 73,054 | Form 4 · filed 1 day after the trade |
| 2025-12-11 | Couling John D | officer | Sale | 7,273 @ $68.75 | $500K | −6.3% of holding | −6.6% | −30.2% | 108,065 | Form 4 · filed 4 days after the trade |
| 2025-12-09 | YEAMAN KEVIN J | director | Sale | 28,168 @ $66.99 | $1.9M | −21.2% of holding | −6.6% | −29.6% | 104,576 | Form 4 · filed 2 days after the trade |
| 2025-12-09 | YEAMAN KEVIN J | director | Sale | 6,199 @ $67.51 | $418K | −5.9% of holding | −6.6% | −29.6% | 98,377 | Form 4 · filed 2 days after the trade |
| 2025-12-01 | SHERMAN MARK ANDREW | officer | Sale | 4,500 @ $67.56 | $304K | −6.7% of holding | −4.4% | −28.4% | 62,397 | Form 4 · filed 2 days after the trade |
| 2025-11-25 | Prophet Tony A | director | Sale | 3,300 @ $67.85 | $224K | −26.6% of holding | −4.5% | −28.5% | 9,107 | Form 4 · filed 1 day after the trade |
| 2025-11-24 | YEAMAN KEVIN J | director | Sale | 36,699 @ $66.91 | $2.5M | −24.2% of holding | −3.9% | −29.3% | 114,725 | Form 4 · filed 2 days after the trade |
| 2025-11-21 | Revankar Shriram | officer | Sale | 3,000 @ $65.55 | $197K | −4.3% of holding | −6.4% | −30.6% | 67,435 | Form 4 · filed 3 days after the trade |
| 2025-11-20 | Couling John D | officer | Sale | 6,164 @ $66.12 | $408K | −5.1% of holding | −3.6% | −27.9% | 115,338 | Form 4 · filed 4 days after the trade |
| 2025-10-14 | YEAMAN KEVIN J | director | Sale | 13,786 @ $69.17 | $954K | −10.7% of holding | −6.5% | −12.9% | 114,725 | Form 4 · filed 2 days after the trade |
| 2025-10-14 | YEAMAN KEVIN J | director | Sale | 11,214 @ $68.51 | $768K | −8.0% of holding | −6.5% | −12.9% | 128,511 | Form 4 · filed 2 days after the trade |
| 2025-09-16 | YEAMAN KEVIN J | director | Sale | 25,000 @ $71.66 | $1.8M | −17.9% of holding | −5.4% | −15.3% | 114,725 | Form 4 · filed 2 days after the trade |
| 2025-08-22 | Revankar Shriram | officer | Sale | 7,000 @ $74.92 | $524K | −9.0% of holding | −7.6% | −21.6% | 70,435 | Form 4 · filed 4 days after the trade |
| 2025-08-12 | YEAMAN KEVIN J | director | Sale | 25,000 @ $72.31 | $1.8M | −17.9% of holding | −2.7% | −11.8% | 114,725 | Form 4 · filed 2 days after the trade |
| 2025-07-16 | YEAMAN KEVIN J | director | Sale | 2,491 @ $75.00 | $187K | −2.1% of holding | −6.2% | −25.7% | 114,725 | Form 4 · filed 1 day after the trade |
| 2025-07-15 | YEAMAN KEVIN J | director | Sale | 39,595 @ $74.81 | $3.0M | −25.6% of holding | −4.0% | −25.5% | 115,005 | Form 4 · filed 2 days after the trade |
| 2025-07-15 | YEAMAN KEVIN J | director | Sale | 280 @ $75.30 | $21K | −0.2% of holding | −4.0% | −25.5% | 114,725 | Form 4 · filed 2 days after the trade |
| 2025-06-24 | YEAMAN KEVIN J | director | Sale | 25,000 @ $74.02 | $1.9M | −17.9% of holding | −1.6% | −23.3% | 114,725 | Form 4 · filed 2 days after the trade |
| 2025-06-10 | YEAMAN KEVIN J | director | Sale | 33,504 @ $76.22 | $2.6M | −22.6% of holding | −5.4% | −24.8% | 114,904 | Form 4 · filed 2 days after the trade |
| 2025-06-10 | YEAMAN KEVIN J | director | Sale | 179 @ $76.57 | $14K | −0.2% of holding | −5.4% | −24.8% | 114,725 | Form 4 · filed 2 days after the trade |
| 2025-06-04 | SHERMAN MARK ANDREW | officer | Sale | 15,000 @ $75.02 | $1.1M | −19.4% of holding | −5.1% | −26.4% | 62,397 | Form 4 · filed 2 days after the trade |
| 2025-05-30 | SHERMAN MARK ANDREW | officer | Sale | 350 @ $74.97 | $26K | −0.6% of holding | −3.3% | −25.4% | 62,397 | Form 4 · filed 4 days after the trade |
| 2025-05-05 | Couling John D | officer | Sale | 675 @ $75.04 | $51K | −0.6% of holding | −4.6% | −32.3% | 121,151 | Form 4 · filed 2 days after the trade |
| 2025-02-19 | Pendleton Todd | officer | Sale | 18,121 @ $83.75 | $1.5M | −32.7% of holding | +5.9% | −15.9% | 37,290 | Form 4 · filed 2 days after the trade |
| 2025-02-05 | Nicholson Ryan | officer | Sale | 7,000 @ $84.07 | $588K | −19.0% of holding | +3.8% | −19.3% | 29,758 | Form 4 · filed 1 day after the trade |
| 2025-01-30 | SHERMAN MARK ANDREW | officer | Sale | 25,000 @ $86.00 | $2.2M | −28.6% of holding | −3.5% | −22.4% | 62,397 | Form 4 · filed 4 days after the trade |
| 2025-01-30 | SHERMAN MARK ANDREW | officer | Sale | 15,000 @ $83.00 | $1.2M | −14.6% of holding | −3.5% | −22.4% | 87,397 | Form 4 · filed 4 days after the trade |
| 2025-01-30 | Rollins Emily | director | Sale | 1,000 @ $84.90 | $85K | −13.3% of holding | −3.5% | −22.4% | 6,493 | Form 4 · filed 4 days after the trade |
| 2024-12-17 | SHERMAN MARK ANDREW | officer | Sale | 7,713 @ $78.22 | $603K | −11.0% of holding | +3.7% | −6.5% | 62,397 | Form 4 · filed 1 day after the trade |
| 2024-12-17 | SHERMAN MARK ANDREW | officer | Sale | 4,625 @ $77.83 | $360K | −6.2% of holding | +3.7% | −6.5% | 70,110 | Form 4 · filed 1 day after the trade |
The vs-S&P columns are a labeled look-back on what the stock did after each filing, measured against the index over the same window. Descriptive history, not a claim about the person or a reason to trade.
163 award / exercise / gift records — not counted as purchases
Awards, option exercises, gifts and tax-withholding disposals are shown separately and never counted as open-market purchases or sales — they carry no conviction information.
| Date | Person | Role | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-01 | Couling John D | officer | Option exercise | 7,667 | 126,394 | Form 4 |
| 2026-09-01 | Couling John D | officer | Option exercise | 7,667 | 7,667 | Form 4 |
| 2026-08-28 | Dolby Dagmar | tenPercentOwner | Gift | 1,000,000 | 1,000,000 | Form 4 |
| 2026-08-28 | Dolby Dagmar | tenPercentOwner | Gift | 2,000,000 | 4,672,117 | Form 4 |
| 2026-08-28 | Dolby Dagmar | tenPercentOwner | Conversion | 300,000 | 300,000 | Form 4 |
| 2026-08-28 | Dolby Dagmar | tenPercentOwner | Conversion | 300,000 | 4,372,117 | Form 4 |
| 2026-08-28 | Dolby Dagmar | tenPercentOwner | Gift | 300,000 | 0 | Form 4 |
| 2026-08-03 | Couling John D | officer | Option exercise | 7,667 | 126,394 | Form 4 |
| 2026-08-03 | Couling John D | officer | Option exercise | 7,667 | 15,334 | Form 4 |
| 2026-07-01 | Couling John D | officer | Option exercise | 7,667 | 126,394 | Form 4 |
| 2026-07-01 | Couling John D | officer | Option exercise | 7,667 | 23,001 | Form 4 |
| 2026-06-01 | Couling John D | officer | Option exercise | 7,666 | 126,393 | Form 4 |
| 2026-06-01 | Couling John D | officer | Option exercise | 7,666 | 30,668 | Form 4 |
| 2026-05-18 | Revankar Shriram | officer | Withheld for tax | 4,329 | 76,274 | Form 4 |
| 2026-05-05 | Couling John D | officer | Option exercise | 7,666 | 126,019 | Form 4 |
| 2026-05-05 | Couling John D | officer | Option exercise | 7,666 | 38,334 | Form 4 |
| 2026-02-25 | Dolby Dagmar | tenPercentOwner | Conversion | 10,000 | 10,000 | Form 4 |
| 2026-02-25 | Dolby Dagmar | tenPercentOwner | Gift | 10,000 | 0 | Form 4 |
| 2026-02-25 | Dolby Dagmar | tenPercentOwner | Conversion | 10,000 | 6,672,117 | Form 4 |
| 2026-02-25 | Dolby Dagmar | tenPercentOwner | Gift | 1,000,000 | 6,682,117 | Form 4 |
| 2026-02-25 | Dolby Dagmar | tenPercentOwner | Gift | 1,000,000 | 1,000,000 | Form 4 |
| 2026-02-13 | Nicholson Ryan | officer | Option exercise | 2,667 | 39,623 | Form 4 |
| 2026-02-13 | Nicholson Ryan | officer | Option exercise | 2,667 | 0 | Form 4 |
| 2026-02-11 | Dolby Dagmar | tenPercentOwner | Gift | 380,000 | 0 | Form 4 |
| 2026-02-11 | Dolby Dagmar | tenPercentOwner | Conversion | 380,000 | 7,682,117 | Form 4 |
| 2026-02-11 | Dolby Dagmar | tenPercentOwner | Conversion | 380,000 | 380,000 | Form 4 |
| 2026-02-05 | YEAMAN KEVIN J | director | Gift | 145,252 | 145,252 | Form 4 |
| 2026-02-03 | TEVANIAN AVADIS | director | Award / grant | 3,908 | 3,908 | Form 4 |
| 2026-02-03 | Prophet Tony A | director | Award / grant | 3,908 | 13,015 | Form 4 |
| 2026-02-03 | Segars Simon | director | Award / grant | 3,908 | 47,150 | Form 4 |
| 2026-02-03 | Rollins Emily | director | Award / grant | 3,908 | 13,541 | Form 4 |
| 2026-02-03 | Dolby David | director | Award / grant | 3,908 | 92,718 | Form 4 |
| 2026-02-03 | GOTCHER PETER C | director | Award / grant | 3,908 | 44,641 | Form 4 |
| 2026-02-03 | Sud Anjali | director | Award / grant | 3,908 | 16,079 | Form 4 |
| 2025-12-16 | YEAMAN KEVIN J | director | Withheld for tax | 6,855 | 143,784 | Form 4 |
| 2025-12-16 | Couling John D | officer | Withheld for tax | 2,612 | 129,708 | Form 4 |
| 2025-12-16 | SHERMAN MARK ANDREW | officer | Withheld for tax | 2,530 | 82,163 | Form 4 |
| 2025-12-16 | Revankar Shriram | officer | Withheld for tax | 2,285 | 86,218 | Form 4 |
| 2025-12-16 | Park Robert J | officer | Withheld for tax | 2,285 | 86,385 | Form 4 |
| 2025-12-16 | Pendleton Todd | officer | Withheld for tax | 1,959 | 53,356 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Across 2012–2021, stocks where a CEO, C-suite officer, or director had recently made an open-market common-stock purchase ran about +28 bp per month above the universe average (n=34,268 stock-weeks). A historical tendency, not a prediction.
Congressional disclosures
No congressional trades disclosed for this company.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.