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 | |
|---|---|---|---|---|---|---|
3951
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
$361M
| $453K | ﹤0.01% |
5,907
-11,712
| -66% | -$774K |
|
3952
CALL
Plains GP Holdings
PAGP
$5.2B
| $453K | ﹤0.01% |
39,300
+21,200
| +117% | +$244K |
|
3953
Direxion Daily 7-10 Year Treasury Bull 3X ETF
TYD
$32.3M
| $453K | ﹤0.01% |
+10,659
| New | +$503K |
|
3954
Energizer
ENR
$1.5B
| $452K | ﹤0.01% |
14,711
+11,992
| +441% | +$417K |
|
3955
CALL
Parsons
PSN
$6.64B
| $452K | ﹤0.01% |
+11,700
| New | +$399K |
|
3956
PUT
Boise Cascade
BCC
$2.83B
| $451K | ﹤0.01% |
6,500
+2,200
| +51% | +$166K |
|
3957
PUT
Integer Holdings
ITGR
$3.41B
| $451K | ﹤0.01% |
5,600
-3,700
| -40% | -$299K |
|
3958
CALL
Corcept Therapeutics
CORT
$10.1B
| $450K | ﹤0.01% |
20,000
+16,000
| +400% | +$340K |
|
3959
Cemex
CX
$17.3B
| $450K | ﹤0.01% |
85,104
-51,527
| -38% | -$292K |
|
3960
JFrog
FROG
$9.26B
| $450K | ﹤0.01% |
16,700
+15,942
| +2,103% | +$403K |
|
3961
PUT
FlexShares Morningstar US Market Factors Tilt Index Fund
TILT
$2.18B
| $449K | ﹤0.01% |
9,600
+8,600
| +860% | +$1.48M |
|
3962
PUT
Root
ROOT
$972M
| $448K | ﹤0.01% |
12,650
-567
| -4% | -$20.4K |
|
3963
CALL
Thor Industries
THO
$4.13B
| $448K | ﹤0.01% |
5,700
-17,600
| -76% | -$1.62M |
|
|
UDMY
3964
CALL
DELISTED
Udemy
UDMY
| $448K | ﹤0.01% |
+36,000
| New | +$498K |
|
3965
CALL
AXT Inc
AXTI
$2.8B
| $447K | ﹤0.01% |
63,700
+10,000
| +19% | +$75.2K |
|
3966
CALL
International Money Express
IMXI
$398M
| $447K | ﹤0.01% |
+21,700
| New | +$373K |
|
3967
PUT
Monster Beverage
MNST
$95.6B
| $447K | ﹤0.01% |
11,200
+4,400
| +65% | +$185K |
|
3968
CALL
SBA Communications
SBAC
$18.6B
| $447K | ﹤0.01% |
1,300
-1,400
| -52% | -$454K |
|
|
TSP
3969
CALL
DELISTED
TuSimple Holdings Inc. Class A Common Stock
TSP
| $447K | ﹤0.01% |
36,700
-88,500
| -71% | -$1.53M |
|
3970
PUT
PetMed Express
PETS
$43M
| $446K | ﹤0.01% |
17,300
-9,000
| -34% | -$233K |
|
|
GAP
3971
The Gap Inc
GAP
$7.28B
| $446K | ﹤0.01% |
31,713
-239,038
| -88% | -$3.81M |
|
|
TRUE
3972
DELISTED
TrueCar
TRUE
| $445K | ﹤0.01% |
+112,745
| New | +$398K |
|
3973
PUT
Fidelity National Financial
FNF
$14.6B
| $444K | ﹤0.01% |
9,464
-3,120
| -25% | -$149K |
|
3974
CALL
New York Times
NYT
$12.2B
| $444K | ﹤0.01% |
9,700
-38,500
| -80% | -$1.67M |
|
3975
CALL
Banco Santander
SAN
$200B
| $444K | ﹤0.01% |
131,500
-57,200
| -30% | -$200K |
|
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.