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 | |
|---|---|---|---|---|---|---|
2026
PUT
Celldex Therapeutics
CLDX
$2.77B
| $2.18M | ﹤0.01% |
63,900
+58,100
| +1,002% | +$1.86M |
|
|
EMBJ
2027
Embraer S.A. ADS
EMBJ
$11.6B
| $2.17M | ﹤0.01% |
171,910
+68,370
| +66% | +$970K |
|
|
IGMS
2028
CALL
DELISTED
IGM Biosciences
IGMS
| $2.17M | ﹤0.01% |
81,100
+72,700
| +865% | +$1.35M |
|
|
CTLT
2029
CALL
DELISTED
CATALENT, INC.
CTLT
| $2.16M | ﹤0.01% |
19,500
+6,600
| +51% | +$689K |
|
2030
CALL
Tower Semiconductor
TSEM
$26.4B
| $2.16M | ﹤0.01% |
44,600
-52,100
| -54% | -$2.2M |
|
2031
CALL
United Microelectronic
UMC
$48.9B
| $2.16M | ﹤0.01% |
236,600
+153,600
| +185% | +$1.52M |
|
|
DM
2032
DELISTED
Desktop Metal, Inc.
DM
| $2.15M | ﹤0.01% |
45,428
-5,395
| -11% | -$228K |
|
2033
Oneok
OKE
$58.7B
| $2.15M | ﹤0.01% |
30,479
+10,476
| +52% | +$670K |
|
|
KEEL
2034
CALL
Keel Infrastructure Corp
KEEL
$2.57B
| $2.15M | ﹤0.01% |
573,500
-176,200
| -24% | -$682K |
|
2035
CALL
Rogers Corp
ROG
$2.33B
| $2.15M | ﹤0.01% |
7,900
+6,100
| +339% | +$1.66M |
|
2036
CALL
East-West Bancorp
EWBC
$17.9B
| $2.14M | ﹤0.01% |
27,100
+26,000
| +2,364% | +$2.19M |
|
2037
HubSpot
HUBS
$10.5B
| $2.14M | ﹤0.01% |
4,509
-8,606
| -66% | -$4.17M |
|
2038
CALL
Waters Corp
WAT
$36.8B
| $2.14M | ﹤0.01% |
6,900
+1,100
| +19% | +$358K |
|
2039
CALL
Floor & Decor
FND
$5.81B
| $2.14M | ﹤0.01% |
26,400
+22,400
| +560% | +$2.27M |
|
2040
CALL
On Holding
ONON
$11.9B
| $2.14M | ﹤0.01% |
84,700
+59,000
| +230% | +$1.57M |
|
|
WCN
2041
CALL
Waste Connections
WCN
$42.8B
| $2.14M | ﹤0.01% |
15,300
+12,800
| +512% | +$1.64M |
|
2042
Truist Financial
TFC
$63.2B
| $2.13M | ﹤0.01% |
+37,588
| New | +$2.32M |
|
2043
Oracle
ORCL
$331B
| $2.13M | ﹤0.01% |
+25,717
| New | +$2.08M |
|
2044
Teucrium Wheat Fund
WEAT
$314M
| $2.13M | ﹤0.01% |
+43,148
| New | +$1.86M |
|
2045
CALL
Chemours
CC
$2.59B
| $2.12M | ﹤0.01% |
67,500
+5,400
| +9% | +$169K |
|
2046
CALL
Lantheus
LNTH
$6.82B
| $2.12M | ﹤0.01% |
38,400
+37,400
| +3,740% | +$1.4M |
|
2047
PUT
Cencora
COR
$60.3B
| $2.12M | ﹤0.01% |
13,700
-17,900
| -57% | -$2.53M |
|
2048
State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF
SPTM
$13.5B
| $2.12M | ﹤0.01% |
38,096
+2,936
| +8% | +$161K |
|
2049
PUT
Applovin
APP
$132B
| $2.11M | ﹤0.01% |
38,400
-25,400
| -40% | -$1.62M |
|
|
SIX
2050
PUT
DELISTED
Six Flags Entertainment Corp.
SIX
| $2.11M | ﹤0.01% |
48,600
-1,200
| -2% | -$50.5K |
|
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.