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 | |
|---|---|---|---|---|---|---|
1701
PUT
FerroAtlántica
GSM
$628M
| $3M | ﹤0.01% |
389,300
+400
| +0.1% | +$2.73K |
|
|
SWCH
1702
PUT
DELISTED
Switch, Inc. Class A Common Stock
SWCH
| $2.99M | ﹤0.01% |
97,100
+48,500
| +100% | +$1.29M |
|
1703
CALL
Fidelity National Financial
FNF
$13.9B
| $2.99M | ﹤0.01% |
63,648
+26,832
| +73% | +$1.28M |
|
1704
PUT
Ericsson
ERIC
$30.7B
| $2.98M | ﹤0.01% |
326,600
+183,400
| +128% | +$1.91M |
|
|
WIRE
1705
DELISTED
Encore Wire Corp
WIRE
| $2.98M | ﹤0.01% |
26,151
-1,158
| -4% | -$139K |
|
1706
Chipotle Mexican Grill
CMG
$40.8B
| $2.97M | ﹤0.01% |
+94,000
| New | +$2.83M |
|
1707
PUT
CoStar Group
CSGP
$11.3B
| $2.96M | ﹤0.01% |
44,500
+39,700
| +827% | +$2.64M |
|
|
ELME
1708
PUT
Elme Communities
ELME
$132M
| $2.96M | ﹤0.01% |
116,200
+115,600
| +19,267% | +$2.85M |
|
1709
CALL
Matador Resources
MTDR
$6.31B
| $2.96M | ﹤0.01% |
55,900
+9,000
| +19% | +$425K |
|
1710
CALL
Hormel Foods
HRL
$13.9B
| $2.95M | ﹤0.01% |
57,300
+26,600
| +87% | +$1.3M |
|
1711
CALL
Magnite
MGNI
$2.65B
| $2.95M | ﹤0.01% |
223,600
+69,100
| +45% | +$932K |
|
1712
PUT
OneMain Financial
OMF
$6.9B
| $2.95M | ﹤0.01% |
62,300
+41,900
| +205% | +$2.09M |
|
1713
CALL
GlobalFoundries
GFS
$29.4B
| $2.95M | ﹤0.01% |
47,300
-4,200
| -8% | -$248K |
|
1714
PUT
Parker-Hannifin
PH
$125B
| $2.95M | ﹤0.01% |
10,400
+8,700
| +512% | +$2.62M |
|
|
DAY
1715
DELISTED
Dayforce
DAY
| $2.95M | ﹤0.01% |
43,167
+40,831
| +1,748% | +$3.03M |
|
|
TGH
1716
CALL
DELISTED
Textainer Group Holdings limited
TGH
| $2.95M | ﹤0.01% |
77,500
+76,500
| +7,650% | +$2.89M |
|
1717
CALL
Canadian Pacific Kansas City
CP
$82B
| $2.95M | ﹤0.01% |
35,700
-44,700
| -56% | -$3.36M |
|
1718
PUT
Diageo
DEO
$46.2B
| $2.94M | ﹤0.01% |
14,500
+12,100
| +504% | +$2.42M |
|
1719
United Natural Foods
UNFI
$3.01B
| $2.94M | ﹤0.01% |
71,201
+13,091
| +23% | +$535K |
|
1720
State Street Utilities Select Sector SPDR ETF
XLU
$24.1B
| $2.94M | ﹤0.01% |
79,094
-120,400
| -60% | -$4.17M |
|
1721
PUT
Vipshop
VIPS
$6.84B
| $2.94M | ﹤0.01% |
327,100
+87,900
| +37% | +$775K |
|
1722
PUT
Lightwave Logic
LWLG
$932M
| $2.94M | ﹤0.01% |
306,200
+285,400
| +1,372% | +$2.48M |
|
1723
CALL
Lithia Motors
LAD
$7.78B
| $2.94M | ﹤0.01% |
9,800
+8,600
| +717% | +$2.68M |
|
|
PLAN
1724
DELISTED
Anaplan, Inc.
PLAN
| $2.94M | ﹤0.01% |
45,189
+37,081
| +457% | +$1.81M |
|
1725
ProShares UltraPro S&P 500
UPRO
$5.1B
| $2.94M | ﹤0.01% |
46,139
-102,563
| -69% | -$6.36M |
|
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.