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 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
826
PUT
Riot Platforms
RIOT
$9.02B
| $10.2M | 0.01% |
483,400
-230,400
| -32% | -$4.16M |
|
827
PepsiCo
PEP
$184B
| $10.2M | 0.01% |
+61,055
| New | +$10.3M |
|
828
PUT
Colgate-Palmolive
CL
$72.1B
| $10.2M | 0.01% |
134,700
+8,500
| +7% | +$673K |
|
829
PUT
Lumen
LUMN
$6.73B
| $10.2M | 0.01% |
905,400
+633,300
| +233% | +$7.25M |
|
830
PUT
Clorox
CLX
$11.3B
| $10.2M | 0.01% |
73,300
+7,500
| +11% | +$1.15M |
|
831
PUT
Digital Turbine
APPS
$971M
| $10.2M | 0.01% |
232,100
-143,200
| -38% | -$6.46M |
|
832
CALL
DuPont de Nemours
DD
$18.6B
| $10.2M | 0.01% |
109,940
-17,527
| -14% | -$1.71M |
|
833
CALL
Dutch Bros
BROS
$8.78B
| $10.1M | 0.01% |
183,600
+129,000
| +236% | +$6.58M |
|
834
CALL
TJX Companies
TJX
$170B
| $10.1M | 0.01% |
167,000
-38,300
| -19% | -$2.56M |
|
|
EXAS
835
CALL
DELISTED
Exact Sciences
EXAS
| $10.1M | 0.01% |
144,600
-4,600
| -3% | -$336K |
|
836
CALL
Domino's
DPZ
$10.7B
| $10.1M | 0.01% |
24,800
+6,200
| +33% | +$2.7M |
|
837
Western Digital
WDC
$192B
| $10.1M | 0.01% |
268,573
+141,072
| +111% | +$5.79M |
|
|
IAA
838
CALL
DELISTED
IAA, Inc. Common Stock
IAA
| $10.1M | 0.01% |
263,400
+201,700
| +327% | +$8.29M |
|
839
CALL
Vanguard Dividend Appreciation ETF
VIG
$110B
| $10M | 0.01% |
61,900
-26,900
| -30% | -$4.34M |
|
840
Teva Pharmaceuticals
TEVA
$36.3B
| $10M | 0.01% |
1,068,882
+537,557
| +101% | +$4.49M |
|
841
ArcelorMittal
MT
$49.9B
| $10M | 0.01% |
313,031
+164,502
| +111% | +$5.27M |
|
842
CALL
Opendoor
OPEN
$3.71B
| $10M | 0.01% |
1,196,703
+550,250
| +85% | +$5.12M |
|
|
VMW
843
CALL
DELISTED
VMware, Inc
VMW
| $10M | 0.01% |
87,900
-50,800
| -37% | -$6.16M |
|
844
CALL
Enterprise Products Partners
EPD
$83.9B
| $10M | 0.01% |
387,500
+115,800
| +43% | +$2.81M |
|
845
PUT
Moody's
MCO
$82.5B
| $9.99M | 0.01% |
29,600
+11,300
| +62% | +$3.8M |
|
846
CALL
ProShares Ultra S&P500
SSO
$7.82B
| $9.9M | 0.01% |
306,600
-77,800
| -20% | -$2.49M |
|
847
PUT
Generac Holdings
GNRC
$12.4B
| $9.87M | 0.01% |
33,200
-22,700
| -41% | -$6.81M |
|
|
HOLX
848
PUT
DELISTED
Hologic
HOLX
| $9.86M | 0.01% |
128,300
+47,300
| +58% | +$3.4M |
|
849
CALL
Dick's Sporting Goods
DKS
$18.3B
| $9.85M | 0.01% |
98,500
-89,900
| -48% | -$9.89M |
|
|
NKLA
850
CALL
DELISTED
Nikola Corporation Common Stock
NKLA
| $9.84M | 0.01% |
30,640
-9,793
| -24% | -$2.5M |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.