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 | |
|---|---|---|---|---|---|---|
5926
Axos Financial
AX
$5.77B
| $116K | ﹤0.01% |
+2,503
| New | +$132K |
|
5927
DocGo
DCGO
$64.3M
| $116K | ﹤0.01% |
+12,613
| New | +$95K |
|
5928
GDS Holdings
GDS
$6.56B
| $116K | ﹤0.01% |
2,975
-4,533
| -60% | -$185K |
|
5929
Direxion Daily S&P 500 High Beta Bear 3X ETF
HIBS
$26M
| $116K | ﹤0.01% |
149
+104
| +231% | +$93.9K |
|
5930
PUT
Lamar Advertising Co
LAMR
$16.2B
| $116K | ﹤0.01% |
1,000
-8,900
| -90% | -$993K |
|
5931
Louisiana-Pacific
LPX
$5.06B
| $116K | ﹤0.01% |
1,883
-11,246
| -86% | -$775K |
|
|
DFTX
5932
PUT
Definium Therapeutics
DFTX
$5.78B
| $116K | ﹤0.01% |
7,007
-6,966
| -50% | -$121K |
|
5933
CALL
ALPS O'Shares Global Internet Giants ETF
OGIG
$104M
| $116K | ﹤0.01% |
+3,100
| New | +$124K |
|
5934
CALL
Porch Group
PRCH
$1.64B
| $116K | ﹤0.01% |
16,800
-16,800
| -50% | -$155K |
|
|
THS
5935
PUT
DELISTED
Treehouse Foods
THS
| $116K | ﹤0.01% |
3,600
+2,200
| +157% | +$82.8K |
|
|
TPIC
5936
PUT
DELISTED
TPI Composites
TPIC
| $116K | ﹤0.01% |
8,300
-5,600
| -40% | -$71.4K |
|
|
QIWI
5937
PUT
DELISTED
QIWI PLC
QIWI
| $116K | ﹤0.01% |
23,600
-3,900
| -14% | -$28.9K |
|
5938
CALL
BlueLinx
BXC
$422M
| $115K | ﹤0.01% |
1,600
-500
| -24% | -$40.9K |
|
5939
Torrid Holdings
CURV
$254M
| $115K | ﹤0.01% |
+19,102
| New | +$163K |
|
|
OPLN
5940
Openlane
OPLN
$4.21B
| $115K | ﹤0.01% |
6,424
+2,034
| +46% | +$32.6K |
|
5941
loanDepot
LDI
$532M
| $115K | ﹤0.01% |
27,907
-1,748
| -6% | -$7.59K |
|
5942
CALL
Magnolia Oil & Gas
MGY
$6.09B
| $115K | ﹤0.01% |
4,900
-700
| -13% | -$15.4K |
|
|
TSE
5943
CALL
DELISTED
Trinseo
TSE
| $115K | ﹤0.01% |
2,400
-12,100
| -83% | -$636K |
|
|
UCTT
5944
Ultra Clean Holdings
UCTT
$3.73B
| $115K | ﹤0.01% |
2,728
+1,954
| +252% | +$93.5K |
|
|
HCCI
5945
CALL
DELISTED
Heritage-Crystal Clean, Inc.
HCCI
| $115K | ﹤0.01% |
+3,900
| New | +$113K |
|
|
LFLY
5946
PUT
DELISTED
Leafly Holdings, Inc. Common Stock
LFLY
| $115K | ﹤0.01% |
695
+450
| +184% | +$72.1K |
|
|
CHRA
5947
CALL
DELISTED
Charah Solutions, Inc Common Stock
CHRA
| $115K | ﹤0.01% |
2,310
+2,190
| +1,825% | +$112K |
|
5948
Teucrium Sugar Fund
CANE
$74.6M
| $114K | ﹤0.01% |
11,867
+948
| +9% | +$8.69K |
|
5949
PUT
Consumer Portfolio Services
CPSS
$202M
| $114K | ﹤0.01% |
11,300
+7,700
| +214% | +$86.4K |
|
5950
Etsy
ETSY
$7.75B
| $114K | ﹤0.01% |
+919
| New | +$137K |
|
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.