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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1151
CALL
Palo Alto Networks
PANW
$267B
| $217K | 0.01% |
8,268
+4,746
| +135% | +$106K |
|
1152
RLJ Lodging Trust
RLJ
$1.85B
| $217K | 0.01% |
+9,268
| New | +$216K |
|
1153
VeriSign
VRSN
$25B
| $217K | 0.01% |
2,499
+1,229
| +97% | +$102K |
|
|
STZ.B
1154
PUT
DELISTED
CONSTELLATION BRANDS, INC. CLASS B
STZ.B
| $217K | 0.01% |
1,822
+724
| +66% | +$112K |
|
|
DNO
1155
DELISTED
United States Short Oil Fund
DNO
| $217K | 0.01% |
3,236
+2,756
| +574% | +$179K |
|
1156
CALL
BHP
BHP
$211B
| $216K | 0.01% |
1,881
+205
| +12% | +$7.08K |
|
1157
Inogen
INGN
$170M
| $216K | 0.01% |
+2,792
| New | +$193K |
|
1158
CALL
SLB Ltd
SLB
$75.3B
| $216K | 0.01% |
2,322
-195
| -8% | -$15.9K |
|
|
WW
1159
PUT
DELISTED
WW International
WW
| $216K | 0.01% |
809
+326
| +67% | +$4.49K |
|
1160
CALL
Chord Energy
CHRD
$7.85B
| $215K | 0.01% |
719
-59
| -8% | -$830 |
|
1161
CALL
Copa Holdings
CPA
$5.57B
| $215K | 0.01% |
219
-75
| -26% | -$7.63K |
|
1162
3D Systems Corp
DDD
$421M
| $215K | 0.01% |
+14,434
| New | +$226K |
|
1163
CALL
Veeva Systems
VEEV
$29.9B
| $215K | 0.01% |
595
-619
| -51% | -$27.8K |
|
|
KSU
1164
CALL
DELISTED
Kansas City Southern
KSU
| $215K | 0.01% |
234
+41
| +21% | +$3.51K |
|
|
LLL
1165
DELISTED
L3 Technologies, Inc.
LLL
| $215K | 0.01% |
1,304
-7,979
| -86% | -$1.29M |
|
|
RMP
1166
DELISTED
Rice Midstream Partners LP
RMP
| $215K | 0.01% |
8,556
+7,767
| +984% | +$191K |
|
|
FNSR
1167
PUT
DELISTED
Finisar Corp
FNSR
| $215K | 0.01% |
1,914
+1,771
| +1,238% | +$54.2K |
|
1168
eHealth
EHTH
$42.9M
| $214K | 0.01% |
17,789
+2,365
| +15% | +$27.4K |
|
|
FOLD
1169
DELISTED
Amicus Therapeutics
FOLD
| $214K | 0.01% |
+30,131
| New | +$191K |
|
|
OPLN
1170
Openlane
OPLN
$4.15B
| $214K | 0.01% |
12,975
+11,271
| +661% | +$192K |
|
1171
Mercado Libre
MELI
$91.6B
| $214K | 0.01% |
+1,014
| New | +$199K |
|
1172
Penumbra
PEN
$12.5B
| $214K | 0.01% |
2,565
+265
| +12% | +$20.1K |
|
1173
CALL
Cencora
COR
$59.9B
| $213K | 0.01% |
446
-131
| -23% | -$11.5K |
|
1174
CALL
Ameriprise Financial
AMP
$45.5B
| $212K | 0.01% |
170
-6
| -3% | -$743 |
|
1175
CALL
Target
TGT
$61.4B
| $212K | 0.01% |
1,815
-1,046
| -37% | -$65.1K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.