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 | |
|---|---|---|---|---|---|---|
|
BPL
251
DELISTED
Buckeye Partners, L.P.
BPL
| $1.14M | 0.07% |
+17,229
| New | +$1.14M |
|
|
ETP
252
DELISTED
Energy Transfer Partners, L.P.
ETP
| $1.12M | 0.07% |
46,834
+41,837
| +837% | +$1.06M |
|
253
Natural Resource Partners
NRP
$1.27B
| $1.12M | 0.07% |
34,621
+34,117
| +6,769% | +$1.11M |
|
254
W.W. Grainger
GWW
$63.8B
| $1.12M | 0.07% |
+4,812
| New | +$1.07M |
|
|
UWC
255
CALL
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $1.12M | 0.07% |
1,070
-109
| -9% | -$114K |
|
256
PUT
Adobe
ADBE
$88.1B
| $1.11M | 0.07% |
952
-87
| -8% | -$9.21K |
|
257
CALL
Martin Marietta Materials
MLM
$33.2B
| $1.1M | 0.07% |
377
+65
| +21% | +$13.4K |
|
|
CTRA
258
DELISTED
Coterra Energy
CTRA
| $1.09M | 0.07% |
46,889
+34,056
| +265% | +$766K |
|
259
CALL
Verizon
VZ
$185B
| $1.09M | 0.07% |
3,980
+900
| +29% | +$45K |
|
260
Annaly Capital Management
NLY
$16.4B
| $1.09M | 0.07% |
27,429
+26,768
| +4,050% | +$1.09M |
|
|
KSU
261
DELISTED
Kansas City Southern
KSU
| $1.09M | 0.07% |
+12,872
| New | +$1.13M |
|
|
WFM
262
DELISTED
Whole Foods Market Inc
WFM
| $1.09M | 0.07% |
35,502
+10,250
| +41% | +$308K |
|
263
Marriott International
MAR
$97.2B
| $1.09M | 0.07% |
+13,174
| New | +$991K |
|
264
Lincoln National
LNC
$7.98B
| $1.08M | 0.06% |
+16,374
| New | +$952K |
|
|
FRED
265
DELISTED
Fred's Inc
FRED
| $1.08M | 0.06% |
58,504
+58,138
| +15,885% | +$629K |
|
266
CALL
Truist Financial
TFC
$63.1B
| $1.08M | 0.06% |
1,778
+418
| +31% | +$17.8K |
|
267
CALL
Johnson & Johnson
JNJ
$616B
| $1.08M | 0.06% |
3,431
-243
| -7% | -$28.1K |
|
268
CALL
Newmont
NEM
$103B
| $1.08M | 0.06% |
5,717
+3,223
| +129% | +$110K |
|
269
CALL
Huntsman Corp
HUN
$2.28B
| $1.07M | 0.06% |
2,213
+189
| +9% | +$3.43K |
|
|
NVO
270
Novo Nordisk
NVO
$216B
| $1.06M | 0.06% |
+59,216
| New | +$1.07M |
|
271
PUT
Teva Pharmaceuticals
TEVA
$35.8B
| $1.06M | 0.06% |
2,236
-500
| -18% | -$20K |
|
272
CALL
Biogen
BIIB
$29.8B
| $1.05M | 0.06% |
810
+11
| +1% | +$3.26K |
|
273
Prudential Financial
PRU
$41.2B
| $1.04M | 0.06% |
+9,994
| New | +$948K |
|
274
PUT
NXP Semiconductors
NXPI
$70.1B
| $1.04M | 0.06% |
4,747
+3,864
| +438% | +$384K |
|
|
ACOR
275
DELISTED
Acorda Therapeutics
ACOR
| $1.03M | 0.06% |
457
+388
| +562% | +$922K |
|
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.