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 | |
|---|---|---|---|---|---|---|
4076
Core Laboratories
CLB
$493M
| $415K | ﹤0.01% |
+13,131
| New | +$368K |
|
4077
CALL
NextDecade
NEXT
$1.63B
| $415K | ﹤0.01% |
+62,700
| New | +$197K |
|
4078
CALL
STAAR Surgical
STAA
$1.13B
| $415K | ﹤0.01% |
5,200
+1,100
| +27% | +$81.9K |
|
|
UCTT
4079
CALL
Ultra Clean Holdings
UCTT
$3.47B
| $415K | ﹤0.01% |
9,800
-3,300
| -25% | -$158K |
|
4080
Acadia Pharmaceuticals
ACAD
$4.45B
| $414K | ﹤0.01% |
17,100
-69,293
| -80% | -$1.68M |
|
4081
PUT
American Vanguard Corp
AVD
$74.1M
| $414K | ﹤0.01% |
20,400
+11,800
| +137% | +$193K |
|
4082
BWX Technologies
BWXT
$15.5B
| $414K | ﹤0.01% |
7,704
-10,645
| -58% | -$524K |
|
4083
Direxion Daily MSCI Emerging Markets Bull 3X ETF
EDC
$140M
| $414K | ﹤0.01% |
7,547
-4,777
| -39% | -$313K |
|
4084
CALL
Levi Strauss
LEVI
$9.8B
| $414K | ﹤0.01% |
21,000
-13,800
| -40% | -$298K |
|
|
PDS
4085
Precision Drilling
PDS
$1.01B
| $414K | ﹤0.01% |
+5,606
| New | +$297K |
|
|
PLYM
4086
PUT
DELISTED
Plymouth Industrial REIT
PLYM
| $414K | ﹤0.01% |
+15,300
| New | +$422K |
|
4087
Radware
RDWR
$1.19B
| $414K | ﹤0.01% |
12,977
-50,392
| -80% | -$1.68M |
|
|
ONC
4088
CALL
BeOne Medicines Ltd
ONC
$34.3B
| $414K | ﹤0.01% |
2,200
+400
| +22% | +$85K |
|
|
VRTV
4089
CALL
DELISTED
VERITIV CORPORATION
VRTV
| $414K | ﹤0.01% |
3,100
+1,900
| +158% | +$207K |
|
4090
CALL
Conduent
CNDT
$251M
| $413K | ﹤0.01% |
80,100
+29,200
| +57% | +$144K |
|
4091
CALL
Titan International
TWI
$530M
| $413K | ﹤0.01% |
28,100
-15,300
| -35% | -$179K |
|
4092
PUT
Varonis Systems
VRNS
$5.13B
| $413K | ﹤0.01% |
8,700
-14,400
| -62% | -$590K |
|
4093
PUT
Boston Properties
BXP
$11.2B
| $412K | ﹤0.01% |
3,200
+2,400
| +300% | +$291K |
|
4094
PUT
Endava
DAVA
$153M
| $412K | ﹤0.01% |
3,100
-800
| -21% | -$101K |
|
4095
CALL
YPF
YPF
$19.5B
| $412K | ﹤0.01% |
85,500
+1,500
| +2% | +$6.45K |
|
|
APRN
4096
DELISTED
Blue Apron Holdings, Inc. Class A Common Stock
APRN
| $411K | ﹤0.01% |
+8,461
| New | +$615K |
|
|
MNTV
4097
PUT
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $411K | ﹤0.01% |
25,300
+24,200
| +2,200% | +$404K |
|
4098
CALL
ArcBest
ARCB
$3.33B
| $410K | ﹤0.01% |
5,100
-1,500
| -23% | -$135K |
|
|
NGD
4099
CALL
DELISTED
New Gold Inc
NGD
| $410K | ﹤0.01% |
228,200
+67,700
| +42% | +$116K |
|
4100
TransDigm Group
TDG
$73.2B
| $410K | ﹤0.01% |
630
+158
| +33% | +$102K |
|
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.