GCTSGCT Semiconductor Holding, Inc.Technology · Semiconductorsas of 2026-09-16
Horizon

Issued 2026-09-16 at $1.91 · now $1.91 (2026-09-16, +0.0% since)

Based on its own history, a month from the 2026-09-16 close, GCTS has typically landed between $1.35 and $2.53 — a range of −29.4% to +32.3% from the issuance price $1.91.

Range of outcomes in historically similar periods — not a price prediction. Ranges are scored publicly on /methodology.
  • Actual close
  • Typical path (median)
  • Middle 50% of outcomes
  • 90% range

1,163 overlapping 1 month windows · 2021-12-27 – 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 ($1.91) — 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 GCTS has typically landed a month from the 2026-09-16 close of $1.91 — the range is history, not a prediction.

$1.35worst · -29.4%$2.53best · +32.3%
  • now $1.91 (+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). $1.91 (+0.1%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $1.84–$1.99
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $1.35–$2.53
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 1,163 windows spanning 2021-12-27 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.
StartReturnMax dropMax rise
3 worst
2024-03-28−85.5%−88.2%+0.0%
2024-04-01−73.9%−78.4%+0.0%
2024-04-02−67.5%−74.8%+0.0%
3 best
2024-02-27+224.1%−35.5%+224.1%
2026-04-28+189.1%+0.0%+189.1%
2026-04-22+161.4%−2.3%+161.4%

1,163 overlapping windows · 2021-12-27 – 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 ~5 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
40%
−2.0%
n=5
Feb
60%
−2.6%
n=5
Mar
80%
+38.9%
n=5
Apr
40%
−15.5%
n=5
May
20%
+22.0%
n=5
Jun
80%
+9.6%
n=5
Jul
40%
−11.0%
n=5
Aug
20%
−9.1%
n=5
Sep
100%
+8.8%
n=5
Oct
25%
−9.1%
n=4
Nov
50%
+0.3%
n=4
Dec
50%
−4.3%
n=4

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.

Share price & reported tradesMonthly open-market valueReporting lag — trade date to filing date2026-092026-082026-072026-062026-052026-042026-032026-022026-012025-122025-112025-102025-092025-08$4$12025-11-25: 1 insider purchase, $21K — Shin Hyunsoo2025-11-21: 1 insider purchase, $4K — Shin Hyunsoo2025-11-20: 1 insider purchase, $33K — Shin Hyunsoo2025-09-12: 1 insider purchase, $67K — Shin Hyunsoo2025-09-05: 1 insider purchase, $13K — Shin Hyunsoo2025-09-04: 1 insider purchase, $10K — Shin Hyunsoo2025-08-15: 1 insider purchase, $152K — Shin Hyunsoo2025-08: 1 open-market purchase, $152K2025-09: 3 open-market purchases, $90K2025-11: 3 open-market purchases, $58K↑ buys↓ salesdirector Shin Hyunsoo — Purchase on 2025-11-25, filed 3 days after the tradedirector Shin Hyunsoo — Purchase on 2025-11-21, filed 3 days after the tradedirector Shin Hyunsoo — Purchase on 2025-11-20, filed 4 days after the tradedirector Shin Hyunsoo — Purchase on 2025-09-12, filed 4 days after the tradedirector Shin Hyunsoo — Purchase on 2025-09-05, filed 3 days after the tradedirector Shin Hyunsoo — Purchase on 2025-09-04, filed 4 days after the tradedirector Shin Hyunsoo — Purchase on 2025-08-15, filed 4 days after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2025-11-25Shin HyunsoodirectorPurchase16,725 @ $1.28$21K+2.3% of holding−9.4%+144.5%757,771Form 4 · filed 3 days after the trade
2025-11-21Shin HyunsoodirectorPurchase3,180 @ $1.28$4K+0.4% of holding−13.1%+132.8%741,046Form 4 · filed 3 days after the trade
2025-11-20Shin HyunsoodirectorPurchase25,453 @ $1.28$33K+3.6% of holding−12.7%+130.6%737,866Form 4 · filed 4 days after the trade
2025-09-12Shin HyunsoodirectorPurchase44,067 @ $1.51$67K+6.8% of holding−3.8%−24.2%694,321Form 4 · filed 4 days after the trade
2025-09-05Shin HyunsoodirectorPurchase10,300 @ $1.30$13K+1.6% of holding+14.9%−24.3%650,254Form 4 · filed 3 days after the trade
2025-09-04Shin HyunsoodirectorPurchase8,250 @ $1.26$10K+1.3% of holding+16.3%−19.1%639,954Form 4 · filed 4 days after the trade
2025-08-15Shin HyunsoodirectorPurchase121,000 @ $1.26$152K+23.7% of holding+19.6%−9.9%631,704Form 4 · filed 4 days after the trade
2025-06-10Shin HyunsoodirectorPurchase45,000 @ $1.16$52K+10.1% of holding+12.8%+10.4%492,248Form 4 · filed 2 days after the trade
2025-06-10Shin HyunsoodirectorPurchase40,000 @ $1.20$48K+9.8% of holding+12.8%+10.4%447,248Form 4 · filed 2 days after the trade
2025-06-05Shin HyunsoodirectorPurchase58,700 @ $1.03$60K+17.9% of holding+29.7%+27.5%385,948Form 4 · filed 1 day after the trade
2025-06-05Shin HyunsoodirectorPurchase21,300 @ $1.02$22K+5.5% of holding+29.7%+27.5%407,248Form 4 · filed 1 day after the trade
2025-06-04Shin HyunsoodirectorPurchase80,000 @ $1.02$82K+32.4% of holding+25.0%+23.8%327,248Form 4 · filed 2 days after the trade
2025-05-23Shin HyunsoodirectorPurchase77,000 @ $1.04$80K+45.2% of holding+31.4%+11.5%247,248Form 4 · filed 4 days after the trade
2025-05-20Shin HyunsoodirectorPurchase86,000 @ $1.18$101K+102.1% of holding+23.2%+3.3%170,248Form 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.

64 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.

DatePersonRoleActionSharesOwned afterFiling
2026-09-10Sum AlexofficerAward / grant75,000258,743Form 4
2026-09-10Kim Jeong-MinofficerAward / grant100,000402,701Form 4
2026-09-10Cheng EdmondofficerAward / grant145,000296,000Form 4
2026-09-10Schlaefer JohndirectorAward / grant150,000352,728Form 4
2026-06-30Barker RobertdirectorAward / grant9,259151,710Form 4
2026-06-30TUDER JEFFREYdirectorAward / grant9,259151,190Form 4
2026-06-30Lee KyeonghodirectorAward / grant9,2591,096,122Form 4
2026-06-30Chan NelsondirectorAward / grant9,259134,901Form 4
2026-06-30Chun KukjindirectorAward / grant9,25998,636Form 4
2026-06-30Shin HyunsoodirectorAward / grant9,259814,068Form 4
2026-03-31Chan NelsondirectorAward / grant24,122125,642Form 4
2026-03-31Chun KukjindirectorAward / grant24,12289,377Form 4
2026-03-31Shin HyunsoodirectorAward / grant24,122804,809Form 4
2026-03-31Barker RobertdirectorAward / grant24,122142,451Form 4
2026-03-31Lee KyeonghodirectorAward / grant24,1221,086,863Form 4
2026-03-31TUDER JEFFREYdirectorAward / grant24,122141,931Form 4
2026-02-23Chun KukjindirectorGift40,00065,255Form 4
2025-12-31TUDER JEFFREYdirectorAward / grant22,916117,809Form 4
2025-12-31Shin HyunsoodirectorAward / grant22,916780,687Form 4
2025-12-31Chun KukjindirectorAward / grant22,916105,255Form 4
2025-12-31Barker RobertdirectorAward / grant22,916118,329Form 4
2025-12-31Chan NelsondirectorAward / grant22,916101,520Form 4
2025-12-31Lee KyeonghodirectorAward / grant22,9161,062,741Form 4
2025-09-30Lee KyeonghodirectorAward / grant18,0921,039,825Form 4
2025-09-30Shin HyunsoodirectorAward / grant18,092712,413Form 4
2025-09-30TUDER JEFFREYdirectorAward / grant18,09294,893Form 4
2025-09-30Chun KukjindirectorAward / grant18,09282,339Form 4
2025-09-30Barker RobertdirectorAward / grant18,09295,413Form 4
2025-09-30Chan NelsondirectorAward / grant18,09278,604Form 4
2025-09-26Schlaefer JohndirectorOther acquisition555202,728Form 4
2025-09-19Schlaefer JohndirectorAward / grant75,000202,173Form 4
2025-09-19Sum AlexofficerAward / grant75,000183,743Form 4
2025-09-19Kim Jeong-MinofficerAward / grant75,000302,701Form 4
2025-09-19Cheng EdmondofficerAward / grant75,000151,000Form 4
2025-06-30Lee KyeonghodirectorAward / grant18,4561,021,733Form 4
2025-06-30Chan NelsondirectorAward / grant18,45660,512Form 4
2025-06-30Shin HyunsoodirectorAward / grant18,456510,704Form 4
2025-06-30Barker RobertdirectorAward / grant18,45677,321Form 4
2025-06-30Chun KukjindirectorAward / grant18,45664,247Form 4
2025-06-30TUDER JEFFREYdirectorAward / grant18,45676,801Form 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.