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 | |
|---|---|---|---|---|---|---|
2526
Stanley Black & Decker
SWK
$14.2B
| $1.35M | ﹤0.01% |
9,691
+5,985
| +161% | +$988K |
|
2527
CALL
United Parks & Resorts
PRKS
$2.11B
| $1.35M | ﹤0.01% |
18,200
-25,400
| -58% | -$1.67M |
|
|
TRTN
2528
PUT
DELISTED
Triton International Limited
TRTN
| $1.35M | ﹤0.01% |
19,300
+14,100
| +271% | +$912K |
|
|
MASI
2529
CALL
DELISTED
Masimo
MASI
| $1.35M | ﹤0.01% |
9,300
+9,200
| +9,200% | +$1.77M |
|
2530
PUT
Blue Owl Capital
OWL
$6.39B
| $1.35M | ﹤0.01% |
106,400
+61,100
| +135% | +$774K |
|
2531
CALL
System1
SST
$15M
| $1.35M | ﹤0.01% |
9,300
+4,820
| +108% | +$592K |
|
2532
PUT
Rocket Lab Corp
RKLB
$39.9B
| $1.35M | ﹤0.01% |
167,500
-84,900
| -34% | -$790K |
|
2533
CALL
IonQ
IONQ
$12.3B
| $1.35M | ﹤0.01% |
105,600
-11,100
| -10% | -$149K |
|
2534
CALL
BorgWarner
BWA
$13.2B
| $1.34M | ﹤0.01% |
39,306
-18,971
| -33% | -$709K |
|
2535
CALL
PubMatic
PUBM
$581M
| $1.34M | ﹤0.01% |
51,500
-29,700
| -37% | -$761K |
|
2536
CALL
Energy Fuels
UUUU
$2.82B
| $1.34M | ﹤0.01% |
147,100
-53,300
| -27% | -$416K |
|
2537
CALL
Cheesecake Factory
CAKE
$4.21B
| $1.34M | ﹤0.01% |
33,800
+6,500
| +24% | +$248K |
|
|
SUM
2538
CALL
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $1.34M | ﹤0.01% |
44,036
+2,441
| +6% | +$81.3K |
|
2539
CALL
Barclays
BCS
$94.1B
| $1.34M | ﹤0.01% |
170,100
+65,300
| +62% | +$666K |
|
2540
PUT
Clover Health Investments
CLOV
$2.28B
| $1.34M | ﹤0.01% |
377,400
-105,400
| -22% | -$306K |
|
|
BKI
2541
PUT
DELISTED
Black Knight, Inc. Common Stock
BKI
| $1.34M | ﹤0.01% |
+23,100
| New | +$1.52M |
|
|
DQ
2542
CALL
Daqo New Energy
DQ
$790M
| $1.34M | ﹤0.01% |
32,400
-42,100
| -57% | -$1.77M |
|
2543
PUT
Paylocity
PCTY
$6.71B
| $1.34M | ﹤0.01% |
6,500
+500
| +8% | +$101K |
|
2544
CALL
Western Midstream Partners
WES
$19.6B
| $1.34M | ﹤0.01% |
53,000
+30,800
| +139% | +$760K |
|
|
NVTA
2545
CALL
DELISTED
Invitae Corporation
NVTA
| $1.34M | ﹤0.01% |
167,700
-29,900
| -15% | -$301K |
|
2546
iShares Select U.S. REIT ETF
ICF
$2.12B
| $1.33M | ﹤0.01% |
18,772
-6,955
| -27% | -$479K |
|
2547
PUT
Simmons First National
SFNC
$3.35B
| $1.33M | ﹤0.01% |
50,800
| – | – |
|
2548
PUT
Yext
YEXT
$501M
| $1.33M | ﹤0.01% |
193,100
-43,400
| -18% | -$331K |
|
|
IPG
2549
CALL
DELISTED
Interpublic Group of Companies
IPG
| $1.33M | ﹤0.01% |
37,500
+11,700
| +45% | +$422K |
|
2550
PUT
monday.com
MNDY
$3.27B
| $1.33M | ﹤0.01% |
8,400
+2,400
| +40% | +$451K |
|
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.