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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ENV
3001
PUT
DELISTED
ENVESTNET, INC.
ENV
| $344K | ﹤0.01% |
64
+63
| +6,300% | +$4.51K |
|
3002
PUT
Ironwood Pharmaceuticals
IRWD
$611M
| $343K | ﹤0.01% |
+340
| New | +$4K |
|
|
WNS
3003
PUT
DELISTED
WNS Holdings
WNS
| $343K | ﹤0.01% |
80
+49
| +158% | +$3.14K |
|
|
AVLR
3004
PUT
DELISTED
Avalara, Inc.
AVLR
| $343K | ﹤0.01% |
46
-213
| -82% | -$17.4K |
|
|
POLY
3005
CALL
DELISTED
Plantronics, Inc.
POLY
| $343K | ﹤0.01% |
341
+208
| +156% | +$3.88K |
|
3006
Eldorado Gold
EGO
$8.31B
| $342K | ﹤0.01% |
+55,438
| New | +$417K |
|
|
CCXI
3007
DELISTED
ChemoCentryx, Inc.
CCXI
| $342K | ﹤0.01% |
+8,521
| New | +$362K |
|
|
TGH
3008
CALL
DELISTED
Textainer Group Holdings limited
TGH
| $341K | ﹤0.01% |
416
+355
| +582% | +$3.24K |
|
3009
CALL
Autoliv
ALV
$8.6B
| $340K | ﹤0.01% |
74
+41
| +124% | +$2.81K |
|
3010
CALL
CareDx
CDNA
$1.92B
| $340K | ﹤0.01% |
156
+31
| +25% | +$695 |
|
3011
VanEck High Yield Muni ETF
HYD
$4.44B
| $340K | ﹤0.01% |
+6,509
| New | +$401K |
|
3012
CALL
O-I Glass
OI
$1.39B
| $340K | ﹤0.01% |
479
+193
| +67% | +$2.11K |
|
3013
CALL
Brinker International
EAT
$8.02B
| $339K | ﹤0.01% |
283
+270
| +2,077% | +$9.08K |
|
3014
CALL
Forward Air
FWRD
$482M
| $339K | ﹤0.01% |
+67
| New | +$4.07K |
|
3015
CALL
NeoGenomics
NEO
$1.81B
| $339K | ﹤0.01% |
123
-38
| -24% | -$1.14K |
|
3016
Open Text
OTEX
$5.43B
| $339K | ﹤0.01% |
9,736
+6,498
| +201% | +$275K |
|
|
COOP
3017
PUT
DELISTED
Mr. Cooper
COOP
| $338K | ﹤0.01% |
+462
| New | +$5.35K |
|
3018
CALL
Icahn Enterprises
IEP
$5.17B
| $338K | ﹤0.01% |
70
+69
| +6,900% | +$4.17K |
|
|
VNET
3019
CALL
VNET Group
VNET
$2.05B
| $338K | ﹤0.01% |
244
+186
| +321% | +$2.28K |
|
|
I
3020
PUT
DELISTED
INTELSAT S. A.
I
| $338K | ﹤0.01% |
2,215
-817
| -27% | -$3.42K |
|
3021
PUT
Affiliated Managers Group
AMG
$9.46B
| $337K | ﹤0.01% |
57
-2
| -3% | -$150 |
|
3022
PUT
CGI
GIB
$13.9B
| $337K | ﹤0.01% |
+62
| New | +$4.5K |
|
3023
Inseego
INSG
$108M
| $337K | ﹤0.01% |
5,422
+1,761
| +48% | +$127K |
|
|
SCS
3024
CALL
DELISTED
Steelcase
SCS
| $337K | ﹤0.01% |
342
+66
| +24% | +$1.09K |
|
3025
Xcel Energy
XEL
$51B
| $337K | ﹤0.01% |
5,591
-6,486
| -54% | -$423K |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.