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 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$49.8M |
| 2 |
Apple
AAPL
|
+$24.5M |
| 3 |
Citigroup
C
|
+$23.5M |
| 4 |
Amazon
AMZN
|
+$22.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$17.4M |
| 2 |
Wells Fargo
WFC
|
+$13.5M |
| 3 |
MDVN
MEDIVATION, INC.
MDVN
|
+$8.62M |
| 4 |
Goldman Sachs
GS
|
+$8.5M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$8.15M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.76% |
| 2 | Technology | 7.19% |
| 3 | Healthcare | 6.91% |
| 4 | Consumer Discretionary | 6.53% |
| 5 | Financials | 5.37% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3226
CALL
ATI
ATI
$26.3B
| $16K | ﹤0.01% |
378
+157
| +71% | +$2.61K |
|
3227
PUT
BBVA Argentina
BBAR
$3.92B
| $16K | ﹤0.01% |
301
+283
| +1,572% | +$5.29K |
|
3228
CALL
Coca-Cola Europacific Partners
CCEP
$48.1B
| $16K | ﹤0.01% |
128
-71
| -36% | -$2.5K |
|
3229
PUT
Churchill Downs
CHDN
$6.15B
| $16K | ﹤0.01% |
1,002
+546
| +120% | +$13.3K |
|
|
CIVI
3230
DELISTED
Civitas Resources
CIVI
| $16K | ﹤0.01% |
142
+36
| +34% | +$4.62K |
|
3231
PUT
Costamare
CMRE
$1.89B
| $16K | ﹤0.01% |
+302
| New | +$2K |
|
3232
PUT
Copa Holdings
CPA
$5.65B
| $16K | ﹤0.01% |
+55
| New | +$4.99K |
|
3233
PUT
DigitalBridge
DBRG
$2.93B
| $16K | ﹤0.01% |
126
+13
| +12% | +$734 |
|
3234
CALL
Dycom Industries
DY
$12.7B
| $16K | ﹤0.01% |
137
+75
| +121% | +$6.07K |
|
3235
PUT
Equifax
EFX
$20.8B
| $16K | ﹤0.01% |
44
-32
| -42% | -$3.91K |
|
3236
CALL
Eversource Energy
ES
$28.1B
| $16K | ﹤0.01% |
396
+99
| +33% | +$5.29K |
|
3237
CALL
Fabrinet
FN
$16.9B
| $16K | ﹤0.01% |
125
+119
| +1,983% | +$4.96K |
|
3238
CALL
Genesis Energy
GEL
$1.81B
| $16K | ﹤0.01% |
169
-274
| -62% | -$9.57K |
|
3239
Graphic Packaging
GPK
$3.3B
| $16K | ﹤0.01% |
+1,322
| New | +$17.1K |
|
3240
Harmonic Inc
HLIT
$1.23B
| $16K | ﹤0.01% |
+3,251
| New | +$16.7K |
|
3241
Hyster-Yale Materials Handling
HY
$596M
| $16K | ﹤0.01% |
264
+145
| +122% | +$8.93K |
|
|
PPLI
3242
PUT
People Inc
PPLI
$3.15B
| $16K | ﹤0.01% |
711
-89
| -11% | -$1.04K |
|
3243
CALL
Immersion
IMMR
$256M
| $16K | ﹤0.01% |
91
-473
| -84% | -$4.46K |
|
3244
Inovio Pharmaceuticals
INO
$79.4M
| $16K | ﹤0.01% |
201
+24
| +14% | +$2.17K |
|
3245
CALL
KKR & Co
KKR
$91.3B
| $16K | ﹤0.01% |
576
-107
| -16% | -$1.61K |
|
|
KW
3246
PUT
DELISTED
Kennedy-Wilson Holdings
KW
| $16K | ﹤0.01% |
605
-17
| -3% | -$363 |
|
3247
Lineage Cell Therapeutics
LCTX
$257M
| $16K | ﹤0.01% |
+5,214
| New | +$16K |
|
3248
PUT
ArcelorMittal
MT
$50.9B
| $16K | ﹤0.01% |
32
-71
| -69% | -$1.51K |
|
3249
Ingevity
NGVT
$2.59B
| $16K | ﹤0.01% |
+303
| New | +$14.5K |
|
3250
CALL
Natural Resource Partners
NRP
$1.3B
| $16K | ﹤0.01% |
39
+3
| +8% | +$97 |
|
Similar funds
Simplex Trading's Q4 2016 Portfolio in Review
As of Q4 2016, Simplex Trading held 7,301 positions worth $1.67B, up 13% from $1.48B the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $181M of net new capital in Q4 2016, opening 1,543 new positions and adding to 2,137 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
By sector, the portfolio is most concentrated in Communication Services at 8.8% of assets, up from 8.4% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Goldman Sachs, an estimated $8.5M trimmed.
- Simplex Trading's largest Q4 2016 buy was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
- Simplex Trading added most to Apple in Q4 2016, an estimated $24.5M increase.
- Simplex Trading's biggest Q4 2016 reduction was Goldman Sachs, cutting an estimated $8.5M.
- Simplex Trading fully exited LinkedIn Corporation in Q4 2016, selling an estimated $17.4M.
- Simplex Trading's ten largest holdings make up 20% of its $1.67B portfolio in Q4 2016.
- Simplex Trading opened 1,543 new positions and closed 1,480 in Q4 2016.
- Simplex Trading's portfolio value rose 13% quarter-over-quarter to $1.67B.
Based on Simplex Trading's 13F filing for Q4 2016, filed 11 Jan 2017.