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 | |
|---|---|---|---|---|---|---|
|
JNPR
3051
DELISTED
Juniper Networks
JNPR
| $328K | ﹤0.01% |
+17,143
| New | +$385K |
|
3052
CALL
Sibanye-Stillwater
SBSW
$5.92B
| $328K | ﹤0.01% |
696
+372
| +115% | +$3.32K |
|
3053
CALL
Inseego
INSG
$108M
| $327K | ﹤0.01% |
53
+31
| +141% | +$2.24K |
|
3054
CALL
CONMED
CNMD
$1.29B
| $326K | ﹤0.01% |
57
+45
| +375% | +$4.15K |
|
3055
3D Systems Corp
DDD
$420M
| $326K | ﹤0.01% |
+42,348
| New | +$413K |
|
3056
CALL
Kornit Digital
KRNT
$706M
| $326K | ﹤0.01% |
131
-154
| -54% | -$5.77K |
|
3057
Impinj
PI
$3.89B
| $326K | ﹤0.01% |
19,510
+18,941
| +3,329% | +$511K |
|
|
LNW
3058
CALL
DELISTED
Light & Wonder
LNW
| $325K | ﹤0.01% |
336
-720
| -68% | -$14.7K |
|
3059
CALL
Vicor
VICR
$9.62B
| $325K | ﹤0.01% |
73
+18
| +33% | +$854 |
|
3060
CALL
Xcel Energy
XEL
$51B
| $325K | ﹤0.01% |
54
+13
| +32% | +$847 |
|
|
AIFU
3061
CALL
AIFU Inc
AIFU
$201M
| – | – |
0
| – | – |
|
3062
Fluor
FLR
$7.29B
| $324K | ﹤0.01% |
46,916
-3,991
| -8% | -$55.7K |
|
3063
CALL
National Fuel Gas
NFG
$7.84B
| $324K | ﹤0.01% |
87
+76
| +691% | +$3.12K |
|
3064
PUT
Ultragenyx Pharmaceutical
RARE
$2.65B
| $324K | ﹤0.01% |
73
-346
| -83% | -$18K |
|
3065
Direxion Daily S&P Biotech Bull 3X ETF
LABU
$546M
| $323K | ﹤0.01% |
717
+687
| +2,290% | +$625K |
|
3066
NovaGold Resources
NG
$2.6B
| $323K | ﹤0.01% |
43,878
+36,483
| +493% | +$312K |
|
3067
Barclays
BCS
$94.1B
| $322K | ﹤0.01% |
+71,106
| New | +$549K |
|
3068
CALL
Columbia Financial
CLBK
$1.13B
| $322K | ﹤0.01% |
224
+216
| +2,700% | +$3.46K |
|
3069
Lincoln National
LNC
$7.91B
| $322K | ﹤0.01% |
12,261
+10,011
| +445% | +$475K |
|
3070
PUT
Universal Corp
UVV
$1.34B
| $322K | ﹤0.01% |
73
+60
| +462% | +$3K |
|
|
NETI
3071
DELISTED
Eneti Inc.
NETI
| $322K | ﹤0.01% |
12,756
+12,091
| +1,818% | +$447K |
|
|
QIWI
3072
PUT
DELISTED
QIWI PLC
QIWI
| $322K | ﹤0.01% |
301
+14
| +5% | +$239 |
|
3073
CALL
Acadia Healthcare
ACHC
$3.17B
| $321K | ﹤0.01% |
175
+174
| +17,400% | +$4.98K |
|
3074
PUT
Gray Television
GTN
$407M
| $321K | ﹤0.01% |
299
+240
| +407% | +$4.34K |
|
3075
PUT
Howmet Aerospace
HWM
$116B
| $321K | ﹤0.01% |
261
+3
| +1% | +$62 |
|
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.