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 | |
|---|---|---|---|---|---|---|
3326
PUT
Agios Pharmaceuticals
AGIO
$2.22B
| $251K | ﹤0.01% |
71
-410
| -85% | -$18.9K |
|
3327
CALL
Sabre
SABR
$704M
| $251K | ﹤0.01% |
424
-541
| -56% | -$9.05K |
|
3328
PUT
Axos Financial
AX
$5.47B
| $250K | ﹤0.01% |
138
+98
| +245% | +$2.46K |
|
3329
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$3.46B
| $250K | ﹤0.01% |
5,329
-8,001
| -60% | -$432K |
|
3330
PUT
Energy Recovery
ERII
$437M
| $250K | ﹤0.01% |
337
+280
| +491% | +$2.65K |
|
3331
Hercules Capital
HTGC
$2.97B
| $250K | ﹤0.01% |
32,812
+32,499
| +10,383% | +$424K |
|
3332
Safety Insurance
SAFT
$1.51B
| $250K | ﹤0.01% |
2,965
-6
| -0.2% | -$523 |
|
3333
CALL
Western Midstream Partners
WES
$19.3B
| $250K | ﹤0.01% |
+772
| New | +$10.6K |
|
3334
AstraZeneca
AZN
$264B
| $249K | ﹤0.01% |
2,795
-3,077
| -52% | -$290K |
|
3335
CALL
CubeSmart
CUBE
$9.56B
| $249K | ﹤0.01% |
93
+71
| +323% | +$2.13K |
|
3336
CALL
Curtiss-Wright
CW
$27.4B
| $249K | ﹤0.01% |
27
+11
| +69% | +$1.41K |
|
|
DVAX
3337
DELISTED
Dynavax Technologies
DVAX
| $249K | ﹤0.01% |
70,643
-10,061
| -12% | -$46.6K |
|
3338
Herbalife
HLF
$1.27B
| $249K | ﹤0.01% |
+8,552
| New | +$318K |
|
3339
Lands' End
LE
$375M
| $249K | ﹤0.01% |
46,722
-25,286
| -35% | -$271K |
|
|
SLCA
3340
PUT
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $249K | ﹤0.01% |
1,386
+759
| +121% | +$3.23K |
|
3341
CALL
EQT Corp
EQT
$32.5B
| $248K | ﹤0.01% |
352
+166
| +89% | +$1.17K |
|
3342
Omeros
OMER
$816M
| $248K | ﹤0.01% |
18,587
+7,490
| +67% | +$99.6K |
|
3343
PUT
Travere Therapeutics
TVTX
$5.31B
| $248K | ﹤0.01% |
170
+163
| +2,329% | +$2.45K |
|
|
HEP
3344
CALL
DELISTED
Holly Energy Partners, L.P.
HEP
| $248K | ﹤0.01% |
177
+77
| +77% | +$1.54K |
|
|
TGE
3345
CALL
DELISTED
Tallgrass Energy, LP Class A Shares
TGE
| $248K | ﹤0.01% |
151
-153
| -50% | -$3.13K |
|
3346
CALL
Franklin Resources
BEN
$17.3B
| $247K | ﹤0.01% |
148
+73
| +97% | +$1.68K |
|
3347
Bank OZK
OZK
$5.52B
| $247K | ﹤0.01% |
+14,793
| New | +$380K |
|
3348
NeoGenomics
NEO
$1.71B
| $246K | ﹤0.01% |
8,916
+4,889
| +121% | +$146K |
|
|
SA
3349
CALL
Seabridge Gold
SA
$2.83B
| $246K | ﹤0.01% |
264
+98
| +59% | +$1.16K |
|
|
ENBL
3350
CALL
DELISTED
ENABLE MIDSTREAM PARTNERS, LP
ENBL
| $246K | ﹤0.01% |
961
+874
| +1,005% | +$6.32K |
|
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.