Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
8476
PUT
Afya
AFYA
$1.28B
| $1.49K | ﹤0.01% |
+100
| New | +$1.45K |
|
8477
CNB Financial Corp
CCNE
$1.01B
| $1.48K | ﹤0.01% |
51
+44
| +629% | +$1.23K |
|
8478
Ingredion
INGR
$6.42B
| $1.46K | ﹤0.01% |
+13
| New | +$1.49K |
|
|
GDOG
8479
Grayscale Dogecoin Trust ETF
GDOG
$5.74M
| $1.46K | ﹤0.01% |
+135
| New | +$1.72K |
|
8480
CALL
Nu Skin
NUS
$255M
| $1.46K | ﹤0.01% |
200
-63,300
| -100% | -$573K |
|
8481
PUT
WisdomTree
WT
$3.16B
| $1.46K | ﹤0.01% |
100
-100
| -50% | -$1.55K |
|
8482
CALL
Columbus McKinnon
CMCO
$426M
| $1.45K | ﹤0.01% |
+100
| New | +$1.86K |
|
8483
CALL
MillerKnoll
MLKN
$1.47B
| $1.45K | ﹤0.01% |
100
-8,000
| -99% | -$157K |
|
8484
Culp Inc
CULP
$46.9M
| $1.44K | ﹤0.01% |
527
-39
| -7% | -$130 |
|
8485
Cerus
CERS
$631M
| $1.44K | ﹤0.01% |
791
-11,106
| -93% | -$24.2K |
|
8486
Goldman Sachs Innovate Equity ETF
GINN
$204M
| $1.43K | ﹤0.01% |
+21
| New | +$1.52K |
|
8487
Betterware México
BWMX
$683M
| $1.43K | ﹤0.01% |
+85
| New | +$1.49K |
|
|
XRPC
8488
CALL
Canary XRP ETF
XRPC
$241M
| $1.43K | ﹤0.01% |
100
-1,100
| -92% | -$18.9K |
|
8489
CALL
Capitol Federal Financial
CFFN
$1.07B
| $1.43K | ﹤0.01% |
+200
| New | +$1.43K |
|
|
NOTE
8490
DELISTED
FiscalNote
NOTE
| $1.42K | ﹤0.01% |
5,587
+2,743
| +96% | +$3.33K |
|
|
TTDU
8491
T-REX 2X Long TTD Daily Target ETF
TTDU
$13M
| $1.42K | ﹤0.01% |
291
-194
| -40% | -$1.76K |
|
8492
Blue Bird Corp
BLBD
$2.58B
| $1.42K | ﹤0.01% |
25
-967
| -97% | -$52.2K |
|
8493
BeyondSpring
BYSI
$51.4M
| $1.42K | ﹤0.01% |
+864
| New | +$1.33K |
|
8494
PUT
PepGen
PEPG
$147M
| $1.42K | ﹤0.01% |
800
-65,500
| -99% | -$368K |
|
8495
CALL
Bassett Furniture
BSET
$184M
| $1.42K | ﹤0.01% |
100
-400
| -80% | -$6.13K |
|
8496
CALL
Skye Bioscience
SKYE
$22.5M
| $1.41K | ﹤0.01% |
2,300
+2,100
| +1,050% | +$1.71K |
|
8497
PUT
GH Research
GHRS
$1.95B
| $1.41K | ﹤0.01% |
100
-200
| -67% | -$3.07K |
|
8498
iShares MSCI Intl Momentum Factor ETF
IMTM
$4.14B
| $1.39K | ﹤0.01% |
29
-312
| -91% | -$15.6K |
|
|
AIFU
8499
PUT
AIFU Inc
AIFU
$196M
| $1.39K | ﹤0.01% |
50
-50
| -50% | -$2.03K |
|
8500
Sprott Physical Gold
PHYS
$14.7B
| $1.38K | ﹤0.01% |
+39
| New | +$1.44K |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.