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 | |
|---|---|---|---|---|---|---|
|
VOYG
2476
CALL
Voyager Technologies
VOYG
$1.39B
| $1.02M | ﹤0.01% |
43,800
+21,800
| +99% | +$626K |
|
2477
CALL
LoveSac
LOVE
$245M
| $1.02M | ﹤0.01% |
69,300
+67,400
| +3,547% | +$893K |
|
2478
PUT
Franklin Resources
BEN
$16.9B
| $1.02M | ﹤0.01% |
43,300
-55,200
| -56% | -$1.42M |
|
2479
PUT
RXO
RXO
$3.73B
| $1.02M | ﹤0.01% |
69,900
+21,700
| +45% | +$318K |
|
2480
CALL
Pembina Pipeline
PBA
$29.2B
| $1.02M | ﹤0.01% |
22,800
-3,700
| -14% | -$157K |
|
2481
PUT
Vanguard California Tax-Exempt Bond ETF
VTEC
$2.8B
| $1.02M | ﹤0.01% |
+10,300
| New | +$1.04M |
|
2482
PUT
TG Therapeutics
TGTX
$8.34B
| $1.02M | ﹤0.01% |
30,700
-94,300
| -75% | -$2.81M |
|
2483
CALL
ING
ING
$93.6B
| $1.02M | ﹤0.01% |
39,100
-52,000
| -57% | -$1.46M |
|
2484
Seagate
STX
$178B
| $1.02M | ﹤0.01% |
+2,599
| New | +$992K |
|
2485
CALL
FS KKR Capital
FSK
$3.02B
| $1.01M | ﹤0.01% |
99,600
-50,200
| -34% | -$628K |
|
2486
PUT
Brinker International
EAT
$8.87B
| $1.01M | ﹤0.01% |
7,100
+5,700
| +407% | +$868K |
|
2487
Bank of Montreal
BMO
$124B
| $1.01M | ﹤0.01% |
+7,488
| New | +$1.04M |
|
2488
PUT
C.H. Robinson
CHRW
$20.2B
| $1.01M | ﹤0.01% |
6,100
+5,700
| +1,425% | +$1.02M |
|
2489
Cipher Digital
CIFR
$7.43B
| $1.01M | ﹤0.01% |
78,673
-269,258
| -77% | -$4.27M |
|
2490
CALL
Corvus Pharmaceuticals
CRVS
$1.12B
| $1.01M | ﹤0.01% |
69,000
+5,900
| +9% | +$94.2K |
|
2491
CALL
Icahn Enterprises
IEP
$5.11B
| $1.01M | ﹤0.01% |
133,700
+19,400
| +17% | +$152K |
|
2492
Ryan Specialty Holdings
RYAN
$6.01B
| $1.01M | ﹤0.01% |
29,880
+27,012
| +942% | +$1.15M |
|
2493
PUT
IDEAYA Biosciences
IDYA
$3.45B
| $1.01M | ﹤0.01% |
30,200
-4,900
| -14% | -$164K |
|
2494
Campbell Soup
CPB
$6.75B
| $1.01M | ﹤0.01% |
45,177
+31,480
| +230% | +$808K |
|
2495
SSR Mining
SSRM
$5.24B
| $1.01M | ﹤0.01% |
+34,209
| New | +$907K |
|
2496
W.P. Carey
WPC
$16.7B
| $1.01M | ﹤0.01% |
+14,799
| New | +$1.04M |
|
2497
CALL
Star Bulk Carriers
SBLK
$3.08B
| $1M | ﹤0.01% |
43,700
-70,700
| -62% | -$1.61M |
|
2498
ESCO Technologies
ESE
$7.84B
| $1M | ﹤0.01% |
3,567
+3,426
| +2,430% | +$864K |
|
2499
ARK Innovation ETF
ARKK
$5.68B
| $1M | ﹤0.01% |
+14,834
| New | +$1.1M |
|
2500
PUT
Herbalife
HLF
$1.29B
| $1M | ﹤0.01% |
68,100
-9,100
| -12% | -$149K |
|
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.