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 | |
|---|---|---|---|---|---|---|
1976
CALL
Sempra
SRE
$60.8B
| $2.27M | ﹤0.01% |
27,000
+17,800
| +193% | +$1.28M |
|
1977
Citigroup
C
$222B
| $2.27M | ﹤0.01% |
42,450
+38,760
| +1,050% | +$2.39M |
|
1978
CALL
Shift4
FOUR
$3.84B
| $2.27M | ﹤0.01% |
36,600
-46,300
| -56% | -$2.44M |
|
1979
PUT
Green Plains
GPRE
$1.19B
| $2.27M | ﹤0.01% |
73,100
+19,200
| +36% | +$603K |
|
1980
PUT
LivePerson
LPSN
$18.9M
| $2.27M | ﹤0.01% |
6,187
+6,034
| +3,944% | +$2.44M |
|
|
RETA
1981
CALL
DELISTED
Reata Pharmaceuticals, Inc. Class A Common Stock
RETA
| $2.27M | ﹤0.01% |
69,200
+50,000
| +260% | +$1.48M |
|
1982
CALL
Ascendis Pharma A/S
ASND
$16.7B
| $2.27M | ﹤0.01% |
19,300
+18,800
| +3,760% | +$2.18M |
|
|
ZNGA
1983
PUT
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $2.26M | ﹤0.01% |
740,300
-177,800
| -19% | -$1.56M |
|
1984
PUT
First Horizon
FHN
$12.1B
| $2.26M | ﹤0.01% |
96,100
-52,100
| -35% | -$1.04M |
|
|
CS
1985
CALL
DELISTED
Credit Suisse Group
CS
| $2.26M | ﹤0.01% |
287,500
-73,300
| -20% | -$651K |
|
1986
CALL
Planet Fitness
PLNT
$4.23B
| $2.25M | ﹤0.01% |
26,700
-18,900
| -41% | -$1.64M |
|
|
CGC
1987
PUT
Canopy Growth
CGC
$375M
| $2.25M | ﹤0.01% |
29,710
+14,460
| +95% | +$1.1M |
|
1988
Aurinia Pharmaceuticals
AUPH
$1.97B
| $2.25M | ﹤0.01% |
181,899
+87,258
| +92% | +$1.35M |
|
1989
Nike
NKE
$61.9B
| $2.25M | ﹤0.01% |
+16,726
| New | +$2.35M |
|
|
ANAT
1990
PUT
DELISTED
American National Group, Inc. Common Stock
ANAT
| $2.25M | ﹤0.01% |
11,900
+8,300
| +231% | +$1.57M |
|
|
DQ
1991
Daqo New Energy
DQ
$790M
| $2.25M | ﹤0.01% |
54,450
-3,514
| -6% | -$148K |
|
|
MGI
1992
PUT
DELISTED
MoneyGram International, Inc. New
MGI
| $2.25M | ﹤0.01% |
212,900
+122,800
| +136% | +$1.18M |
|
|
VTLE
1993
CALL
DELISTED
Vital Energy
VTLE
| $2.25M | ﹤0.01% |
28,400
-8,200
| -22% | -$595K |
|
1994
Tencent Music
TME
$14.5B
| $2.25M | ﹤0.01% |
461,349
+203,527
| +79% | +$1.14M |
|
|
AVLR
1995
PUT
DELISTED
Avalara, Inc.
AVLR
| $2.24M | ﹤0.01% |
22,500
-20,400
| -48% | -$2.07M |
|
|
APLS
1996
CALL
DELISTED
Apellis Pharmaceuticals
APLS
| $2.23M | ﹤0.01% |
44,000
+41,000
| +1,367% | +$1.81M |
|
1997
CALL
Radian Group
RDN
$5.14B
| $2.23M | ﹤0.01% |
100,600
+97,000
| +2,694% | +$2.23M |
|
1998
CALL
Tenet Healthcare
THC
$20.1B
| $2.23M | ﹤0.01% |
26,000
+20,400
| +364% | +$1.68M |
|
1999
PUT
STAAR Surgical
STAA
$1.16B
| $2.23M | ﹤0.01% |
27,900
+21,400
| +329% | +$1.59M |
|
2000
CALL
Ardagh Metal Packaging
AMBP
$2.86B
| $2.23M | ﹤0.01% |
274,100
+234,200
| +587% | +$2.03M |
|
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.