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 | |
|---|---|---|---|---|---|---|
5326
Vera Bradley
VRA
$105M
| $81.3K | ﹤0.01% |
25,740
-9,343
| -27% | -$26.6K |
|
|
SF
5327
CALL
Stifel
SF
$12.1B
| $81.3K | ﹤0.01% |
1,100
-550
| -33% | -$43.7K |
|
5328
Bumble
BMBL
$368M
| $81.2K | ﹤0.01% |
24,913
-72,992
| -75% | -$243K |
|
|
ONTF
5329
PUT
DELISTED
ON24
ONTF
| $81K | ﹤0.01% |
+10,000
| New | +$79.9K |
|
|
CCC
5330
CCC Intelligent Solutions
CCC
$3.43B
| $80.9K | ﹤0.01% |
+13,479
| New | +$88.3K |
|
5331
Vanguard FTSE All-World ex-US ETF
VEU
$65.8B
| $80.8K | ﹤0.01% |
+1,076
| New | +$83.4K |
|
5332
PUT
FerroAtlántica
GSM
$630M
| $80.8K | ﹤0.01% |
19,600
-60,300
| -75% | -$291K |
|
|
FIAT
5333
YieldMax Short COIN Option Income Strategy ETF
FIAT
$34.7M
| $80.7K | ﹤0.01% |
3,086
+553
| +22% | +$15.3K |
|
5334
CALL
Teekay Tankers
TNK
$2.66B
| $80.7K | ﹤0.01% |
+1,100
| New | +$73.6K |
|
5335
CALL
Pinnacle West Capital
PNW
$12.9B
| $80.6K | ﹤0.01% |
800
-2,200
| -73% | -$212K |
|
5336
CALL
Winnebago Industries
WGO
$848M
| $80.6K | ﹤0.01% |
2,600
-100
| -4% | -$4.17K |
|
5337
Vaalco Energy
EGY
$605M
| $80.5K | ﹤0.01% |
+12,693
| New | +$64K |
|
5338
RPC Inc
RES
$1.3B
| $80.3K | ﹤0.01% |
11,335
+10,155
| +861% | +$63.2K |
|
5339
CALL
First Interstate BancSystem
FIBK
$3.67B
| $80.2K | ﹤0.01% |
2,400
+200
| +9% | +$7.15K |
|
5340
PUT
Astronics
ATRO
$3.54B
| $80.1K | ﹤0.01% |
1,440
+1,080
| +300% | +$65.2K |
|
|
ORIO
5341
CALL
Orion Digital Corp
ORIO
$14.7M
| $80.1K | ﹤0.01% |
85,000
+84,700
| +28,233% | +$94.2K |
|
5342
Direxion Daily MSCI Emerging Markets Bull 3X ETF
EDC
$150M
| $80.1K | ﹤0.01% |
1,430
+1,347
| +1,623% | +$88.8K |
|
5343
PUT
Archrock
AROC
$6.87B
| $80K | ﹤0.01% |
2,300
-1,600
| -41% | -$51.1K |
|
5344
PUT
Deluxe
DLX
$1.18B
| $79.9K | ﹤0.01% |
2,900
+1,000
| +53% | +$26.2K |
|
5345
PUT
Ring Energy
REI
$333M
| $79.9K | ﹤0.01% |
52,200
-123,300
| -70% | -$157K |
|
5346
CALL
MeiraGTx Holdings
MGTX
$1.11B
| $79.7K | ﹤0.01% |
9,200
| – | – |
|
5347
YieldMax META Option Income Strategy ETF
FBY
$89.8M
| $79.6K | ﹤0.01% |
7,888
+3,560
| +82% | +$41.8K |
|
5348
CALL
Blink Charging
BLNK
$79M
| $79.5K | ﹤0.01% |
140,300
-70,400
| -33% | -$49.6K |
|
5349
Vanguard Total International Bond ETF
BNDX
$82B
| $79.5K | ﹤0.01% |
+1,654
| New | +$80.2K |
|
5350
PUT
Werner Enterprises
WERN
$2.6B
| $79.4K | ﹤0.01% |
2,700
+2,600
| +2,600% | +$84.3K |
|
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.